Does anyone know how to answer this math question.. I need help?

Question

the question is:

-3(7x-2)+4(3x+2)-7=5(3-2x)

Answer 1

First, get rid of the parentheses:

-21x + 6 + 12x + 8 - 7 = 15 - 10x

Next, add like terms together to get:

-9x + 7 = 15 - 10x

Now, just simplify

-9x + 10x = 15 - 7

x=8

Answer 2

-21x+6+12x+8-7=15-10x

-9x+7=15-10x

x=8

Answer 3

distrubute to the patenthesis to get -21x+6+12x+8-7= 15-10x

combine like terms to get

-9x+7=15-10x

subtract -10x (which would turn out to be add because two negatives equal a positive) from both sides to get

1x + 7 = 15

subtarct 7 from both sides to get x = 8

Answer 4

- 3(7x - 2) + 4(3x + 2) - 7 = 5(3 - 2x)

- 21x + 6 + 12x + 8 - 7 = 15 - 10x

- 9x + 10x = 15 - 7

x = 8

Answer: x = 8

Proof:

- 3(7[8] - 2) + 4(3[8] + 2) - 7 = 5(3 - 2[8])

- 3(56 - 2) + 4(24 + 2) - 7 = 5(3 - 16)

- 3(54) + 4(26) - 7 = 5(- 13)

- 162 + 104 - 7 = - 65

- 65 = - 65

Answer 5

-3(7x-2)+4(3x+2)-7=5(3-2x)

distribute --> -21x+6+12x+8-7  =15-10x

combine like terms --> -9x + 7 = 15-10x

bring all x's to the left side, all numbers to the right --> x=8!

Answer 6

first you distribute to get

-21x+6+12x+8=15-10x

then combine like terms to get

-9x+14=15-10x

then subtract the 15 from both sides

-9x-1=-10x

add -9 to both sides

-1=-1x

then divide both sides by negative one to get

1=x!

Answer 7

-21X+6+12X+8-7=15-10X

now bring the -10X to the left that makes it a +

-11X+6+12X+1=15

-21X became -11 b/c -21+10=-11 now take all the numbers to the right.

-11X+12X=15-6-1

anytime you move from one side of the equation to the other side the sign will change.

1X=8 ===> X=8

Answer 8

-21x + 6 + 12x + 8 -7 = 15 - 10x

-9x +7 =15 -10x

x=8?

I miss alg 1, just wait till Alg 2

Answer 9

-3(7x-2)+4(3x+2)-7=5(3-2x)

-21x + 6 +12x +8 -7 = 15 -10x

-11x +7 +12x =15



x =8

thanx

Answer 10

Try using the BODMAS (Brackets of Division, Multiplication Addition and substraction) and you should be able get the answer...(also pay attention to the signs specially '-')

Answer 11

Simplify each side of the equation using distributive

-21x+6+12x+8-7= 15-10x

Combine like terms

-9x+7=15-10x

Add 10x to -9x

X+7=15

Subtract 7 from each side

X=8

Answer 12

x=8

here's the work:

1.  multiply all the factors first and get:

-21x+6+12x+8-7=15-10x

2.  move all x's to the left side and all numbers to the right and get:

-21x+12x+10x=-6-8+7+15

3.  combine like terms and get:

x=8

Answer 13

Okay, well the trick is to combine like terms and get all the (x)s together on one side :)

-3(7x-2)+4(3x+2)-7=5(3-2x)

First expand out the brackets (multiply everything in th ebrackets by the number before it)

-21x - 6 + 12x + 8 - 7 = 15 - 10x

To get rid of the (-10x) on the right side of the equation, you ADD it to the other side.

-21x - 6 + 12x + 8 - 7 + 10x = 15

Now combine the x terms (-21x + 12x + 10x) = 1x = x

x - 6 + 8 - 7 = 15

and move all the lone numbers over to the right by using the opposite signs, like so

x = 6 - 8 + 7 + 15

and then we solve

x = 20.

EDIT. Can't believed I bollocksed that up right at the beginning.

Of course, -3(7x-2) expands to -21x PLUS 6

Duh.

Answer 14

-21x + 6 + 12x + 8 -7 = 15 - 10x

x= 15 - 6 -8 +7

x= 8

Answer 15

1.) Distribute the numbers throughout the parentheses

-21x + 6 + 12x + 8 - 7 = 15 - 10x

2.) Combine like terms

-9x + 7 = 15 - 10x

3.) Get all the x's on one side

x = 8