7x-3(2x+7)=8-2(x+1)

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Solution for 7x-3(2x+7)=8-2(x+1) equation:


Simplifying
7x + -3(2x + 7) = 8 + -2(x + 1)

Reorder the terms:
7x + -3(7 + 2x) = 8 + -2(x + 1)
7x + (7 * -3 + 2x * -3) = 8 + -2(x + 1)
7x + (-21 + -6x) = 8 + -2(x + 1)

Reorder the terms:
-21 + 7x + -6x = 8 + -2(x + 1)

Combine like terms: 7x + -6x = 1x
-21 + 1x = 8 + -2(x + 1)

Reorder the terms:
-21 + 1x = 8 + -2(1 + x)
-21 + 1x = 8 + (1 * -2 + x * -2)
-21 + 1x = 8 + (-2 + -2x)

Combine like terms: 8 + -2 = 6
-21 + 1x = 6 + -2x

Solving
-21 + 1x = 6 + -2x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '2x' to each side of the equation.
-21 + 1x + 2x = 6 + -2x + 2x

Combine like terms: 1x + 2x = 3x
-21 + 3x = 6 + -2x + 2x

Combine like terms: -2x + 2x = 0
-21 + 3x = 6 + 0
-21 + 3x = 6

Add '21' to each side of the equation.
-21 + 21 + 3x = 6 + 21

Combine like terms: -21 + 21 = 0
0 + 3x = 6 + 21
3x = 6 + 21

Combine like terms: 6 + 21 = 27
3x = 27

Divide each side by '3'.
x = 9

Simplifying
x = 9

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