7(x+6)+8(x+6)=7x-7

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Solution for 7(x+6)+8(x+6)=7x-7 equation:


Simplifying
7(x + 6) + 8(x + 6) = 7x + -7

Reorder the terms:
7(6 + x) + 8(x + 6) = 7x + -7
(6 * 7 + x * 7) + 8(x + 6) = 7x + -7
(42 + 7x) + 8(x + 6) = 7x + -7

Reorder the terms:
42 + 7x + 8(6 + x) = 7x + -7
42 + 7x + (6 * 8 + x * 8) = 7x + -7
42 + 7x + (48 + 8x) = 7x + -7

Reorder the terms:
42 + 48 + 7x + 8x = 7x + -7

Combine like terms: 42 + 48 = 90
90 + 7x + 8x = 7x + -7

Combine like terms: 7x + 8x = 15x
90 + 15x = 7x + -7

Reorder the terms:
90 + 15x = -7 + 7x

Solving
90 + 15x = -7 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
90 + 15x + -7x = -7 + 7x + -7x

Combine like terms: 15x + -7x = 8x
90 + 8x = -7 + 7x + -7x

Combine like terms: 7x + -7x = 0
90 + 8x = -7 + 0
90 + 8x = -7

Add '-90' to each side of the equation.
90 + -90 + 8x = -7 + -90

Combine like terms: 90 + -90 = 0
0 + 8x = -7 + -90
8x = -7 + -90

Combine like terms: -7 + -90 = -97
8x = -97

Divide each side by '8'.
x = -12.125

Simplifying
x = -12.125

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