20=7x+2(-5x-8)

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Solution for 20=7x+2(-5x-8) equation: 


Simplifying
20 = 7x + 2(-5x + -8)

Reorder the terms:
20 = 7x + 2(-8 + -5x)
20 = 7x + (-8 * 2 + -5x * 2)
20 = 7x + (-16 + -10x)

Reorder the terms:
20 = -16 + 7x + -10x

Combine like terms: 7x + -10x = -3x
20 = -16 + -3x

Solving
20 = -16 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
20 + 3x = -16 + -3x + 3x

Combine like terms: -3x + 3x = 0
20 + 3x = -16 + 0
20 + 3x = -16

Add '-20' to each side of the equation.
20 + -20 + 3x = -16 + -20

Combine like terms: 20 + -20 = 0
0 + 3x = -16 + -20
3x = -16 + -20

Combine like terms: -16 + -20 = -36
3x = -36

Divide each side by '3'.
x = -12

Simplifying
x = -12

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