Help in solving for x in equations?

Question

Hey everyone, i've been up all night and i need to get these questions done in two days. I need help solving for x in these equations. This seems to have slipped my mind as of i didn't have the greatest math teacher. Help would be greatly appreciated and this is all i need left on my math packet.

1) -4y-(5y+6)=-7y+3

2) 4(1-x)+3x=-2(x+1)

3) 5(y-2) =-2(12-9y)+y

4) 4x+2x+24+180

5) (3x+5)+ (x+1) = 180

6) 5(x-2) - 14x = -3x - (5-4x)

(These next problems are fractions)

7) x/8 = 4/9

8) x/3= x+1/4

9) x/32 = 2/x

Help for any of these problems is greatly appreciated.

Answer 1

1) 5

2) 9

3) 4

5) 2

6) 8

7) 4

8) 5

9) 2

Answer 2

We are not you personal calculators. Go elsewhere if you feel the need to cheat on your algebra homework.

Answer 3

1) -4y - 5y - 6 = -7y + 3

    -4y - 5y + 7y = 3 + 6

    -2y = 9

    y = -4.5   (or -9/2)

2) 4 - 4x + 3x = -2x -2

    -4x + 3x + 2x = -2 - 4

    x = -6

3) 5y - 10 = -24 + 18y + y

    -12y = -14

    y = 14/12

5) 3x + 5 + x + 1 = 180

    4x = 174

    x = 43.5     (or 87/2)

6) 5x - 10 - 14x = -3x - 5 + 4x

    -10x = 5

    x = -0.5      (or -1/2)

7) x/8 * 8/1 = 4/9 * 8/1

    x = 32/9

9) x/32  * 32/1 = 2/x * 32/1

    x = 64/x

    x * x/1 = 64/x * x/1

    2x = 64

    x = 32

Answer 4

1)

-4y=7y+3+5y+6

-4y-12y=9

-16y=9

y= -9/16

are you sure you wrote no.1 down properly?

2)

4-4x+3x= -2x-2

4-x=-2x-2

4+x=-2

x=-6

3)

5y-10=-24+18y+y

14=14y

y=1

7)

x= 32/9

8)

x=3(x+1/4)

x=3x+3/4

-2x=3/4

x= -3/8

9)

(x.x)/32=2

x.x=64

x=8

thats the last time i help some lazy kid with homework

Answer 5

For the first 6 equations, expand the equations and collect all the x (or y) terms on the left side of the "=" sign and all the number values on the right, having a care to change sign as you cross the "=". Add up the x coefficients and then divide that into the sum of the number values. Example;

(3) 5(y-2) =-2(12-9y)+y

5y - 10 = -24 +18y +y

-14y = -14



y= 1

For equations (7)-(9), multiply across by the least common denominator and proceed as above. Example:

8) x/3= x+1/4.........LCD is 12

4x = 12x + 3

-8x = 3

x = -3/8

I'm sure you can do them correctly.

Answer 6

1)

-4y - (5y + 6) = -7y + 3

-4y - 5y - 6 = -7y + 3

-9y + 7y = 6 + 3

-2y = 9

y = 9/-2

y = -9/2 (-4.5)

2)

4(1 - x) + 3x = -2(x + 1)

4*1 - 4*x + 3x = -2*x - 2*1

4 - 4x + 3x = -2x - 2

4 - x = -2x - 2

2x - x = -4 - 2

x = -6

3)

5(y - 2) = -2(12 - 9y) + y

5*y - 5*2 = -2*12 + 2*19y + y

5y - 10 = -24 + 38y + y

5y - 39y = -24 + 10

-34y = -14

y = -14/-34

y = 7/17

4)

4x + 3x + 24 + 180

= 7x + 204

5)

(3x + 5) + (x + 1) = 180

3x + 5 + x + 1 = 180

3x + x = 180 - 5 - 1

4x = 174

x = 174/4

x = 87/2 (43.5)

6)

5(x - 2) - 14x = -3x - (5 - 4x)

5*x - 5*2 - 14x = -3x - 5 + 4x

5x - 10 - 14x = -3x + 4x - 5

-9x - 10 = x - 5

-9x - x = 10 - 5

-10x = 5

x = 5/-10

x = -1/2 (-0.5)

7)

x/8 = 4/9

x = 8(4/9)

x = 32/9

8)

x/3 = (x + 1)/4

x = 3(x + 1)/4

4x = 3x + 3

4x - 3x = 3

x = 3

9)

x/32 = 2/x

x = 32(2/x)

x = 64/x

x^2 = 64

x = ±√64

x = ±8

Answer 7

1) -4.5

2) -6

3) -1

4) your equation seems to lack something

5) 11.25

6) -0.5

7) 3.55

8) -0.375

9) 8

Answer 8

7. x/8 = 4/9

x/8 x 8/1 = 4/9 x 8/1

x = 32/9

x = 3 5/9

Answer 9

I guess i could help you out.

1) - 4y - ( 5y + 6 ) = - 7y + 3

- 4y - 5y - 6 = - 7y + 3

2 y = - 9

y = - 4.5

2) 4( 1 - x ) + 3x = -2( x + 1)

4 - 4x + 3x = -2x - 2

x = -6

3) 5( y - 2 ) = -2 ( 12 - 9y ) + y

5y - 10 = 18y - 24 + y

14y = 14

y = 1

4) 4x + 2x + 24 = 180 ( i presume this is the correct one and you typed it out wrongly? )

6x = 156

x = 26

5) ( 3x + 5 ) + ( x + 1 ) = 180

4x + 6 = 180

4x = 174

x = 43.5

6) 5 ( x - 2 ) - 14x = -3x - ( 5 - 4x )

5x - 10 - 14x = -3x - 5 + 4x

10 x = -5

x = - 0.5

7) x / 8 = 4 / 9

bringing 8 over,

x = 32 / 9

8) x / 3 = x + 1/4

bringing 3 over,

x = 3x + 3/4

2x = -3/4

x = -3/8

9) x / 32 = 2 / x

multiplying by x,

x² / 32 = 2

x² = 64

x = ±8