Solve for x. 5x+1=9?

Question

Hi i really need help

A.5x+1=9

B.3(x-2)=5x

C.-2(x+1) -3 (x-4)=5

D.4(x-2)= -5 (x+1)

E.(x+2) (x-1) = 0

Answer 1

A. 5x = 9-1

    5x = 8

    x = 8/5

B. 3(x-2) = 5x

    3x-6 = 5x

    3x - 5x = 6

    -2x = 6

    x = -3

C. -2(x+1) - 3(x-4) = 5

    -2x - 2 - 3x + 12 = 5

    -2x - 3x = 5+2-12

    -5x = -5

    x = 1

D. 4(x-2)= -5 (x+1)

    4x - 8 = -5x - 5

    4x + 5x = 8- 5

    9x = 3

    x = 3/9

    x = 1/3

E. (x+2) (x-1) = 0

     x^2 - x +2x -2 =0

     x^2 + x - 2 = 0

     (x+2)(x-1) = 0

      x = -2

  or  x = 1

Answer 2

a) x = 8/5

b) x = -3

c) x = -3/5

d) x = 1/3

e) x = 1 or -2

Answer 3

A. x = 1.6

C. x = 9 [ according to (x-4)= 5 ]

Answer 4

A. 5x+1=9

    5x=9-1

    5x=8 then divide both sides by 5

    x= 8/5

B. 3(x-2)=5x

    3x-6=5x

    6=5x-2x

    6=3x divide both sides by 3

    2=x

C. -2(x+1)-3(x-4)=5

    -2x-2-3x+12=5 then combine the x's and the numbers

     x+10=5

     x=5-10

     x=-5

D. 4(x-2)=-5(x+1)

    4x-8=-5x-5

    4x+5x=-5+8

    x=3

E. (x+2) (x-1) = 0

    x squared +2x -2

  not sure on this one.

    

Answer 5

I will show you step by step for A and D.

5x + 1 = 9

we want the variables on one side of the equal sign and the numbers on ther other side.

subtract 1 from both sides

5x + 1 - 1 = 9 - 1

5x = 8

next divide both sides by 5

5x/5 = 8/5

x = 8/5

--------------------------------------...

4(x-2) = -5(x+1)

using distributive property, multiply out each side

4x - 8 = -5x - 5

arrange the variables on one side and the numbers on the other side

first add 8 to both sides

4x - 8 + 8 = -5x - 5 + 8

4x = -5x + 3

next add 5x to both sides

4x + 5x = -5x + 3 + 5x

9x = 3

divide both sides by 9

9x/9 = 3/9

x = 3/9

x = 1/3

You should now be able to figure out the rest.

Answer 6

A.x= 5/8

B.x=-3

C.x=1

D.x=1/3

E.x=-2, 1

Answer 7

a.

5x /8

b  

3x / -1

c 2x + 3     -3x -12= 5

d 4x -8   -5x -4

e 2x +x-1 2x -2

well I'm not sure

Answer 8

A) 5x+1=9

Subtract one from both sides

    5x=8

Divide 8 by 5

    x=1.6

B) 3(x-2)=5x

Distribute the 3

    3x-6=5x

Subtract 3x from both sides

    -6=2x

Divide by 2

    -3=x

C)-2(x+1)-3(x-4)=5

Distribute

    -2x-2-3x+12=5

Simplify

    -5x+10=5

Subtract 10 from both sides

    -5x=-5

Simplify

     x=1

D) 4(x-2)=5(x+1)

Distribute

    4x-8 = 5x+5

Add 8 to both sides

     4x=5x+13

Subtract 5x from both sides

     -x=13

Simplify

     x= -13

E) (x+2)(x+1) = 0

Use the Zero Product Property (If the product of two variables is zero, then one or both of the variables must be zero.)

     x=-2, x=-1

Hope this helps!!

Answer 9

i  really not sure. just a guess ------

A. 5x+1=9

    5x=9-1

    5x=8

     x =8/5 or 1.6

B. 3(x-2)=5x

    3x-6=5x

    3x+5x=6

    8x=6

    x=6/8 or 3/4

C. -2(x+1) -3(x-4)=5

    -2x-2-3x+12=5

    -5x+10=5

     10-5=5x

      5=5x

      1=x  or x=1

D. 4(x-2)=-5(x+1)

    4x-8=-5x-5

    4x+5x=8-5

    9x=3

    x=3/9 or 1/3

the last one is just a complete wild guess

E. (x+2)(x+1)

    x2-1x+2x-2=0

    

    x=x2+2    (x2 is x squared)