7x-2(-x-9)=-8(-4x-7)

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Solution for 7x-2(-x-9)=-8(-4x-7) equation:


Simplifying
7x + -2(-1x + -9) = -8(-4x + -7)

Reorder the terms:
7x + -2(-9 + -1x) = -8(-4x + -7)
7x + (-9 * -2 + -1x * -2) = -8(-4x + -7)
7x + (18 + 2x) = -8(-4x + -7)

Reorder the terms:
18 + 7x + 2x = -8(-4x + -7)

Combine like terms: 7x + 2x = 9x
18 + 9x = -8(-4x + -7)

Reorder the terms:
18 + 9x = -8(-7 + -4x)
18 + 9x = (-7 * -8 + -4x * -8)
18 + 9x = (56 + 32x)

Solving
18 + 9x = 56 + 32x

Solving for variable 'x'.

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

Add '-32x' to each side of the equation.
18 + 9x + -32x = 56 + 32x + -32x

Combine like terms: 9x + -32x = -23x
18 + -23x = 56 + 32x + -32x

Combine like terms: 32x + -32x = 0
18 + -23x = 56 + 0
18 + -23x = 56

Add '-18' to each side of the equation.
18 + -18 + -23x = 56 + -18

Combine like terms: 18 + -18 = 0
0 + -23x = 56 + -18
-23x = 56 + -18

Combine like terms: 56 + -18 = 38
-23x = 38

Divide each side by '-23'.
x = -1.652173913

Simplifying
x = -1.652173913

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