20=-5(1+x)+(-7-4x)

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Solution for 20=-5(1+x)+(-7-4x) equation:


Simplifying
20 = -5(1 + x) + (-7 + -4x)
20 = (1 * -5 + x * -5) + (-7 + -4x)
20 = (-5 + -5x) + (-7 + -4x)

Remove parenthesis around (-7 + -4x)
20 = -5 + -5x + -7 + -4x

Reorder the terms:
20 = -5 + -7 + -5x + -4x

Combine like terms: -5 + -7 = -12
20 = -12 + -5x + -4x

Combine like terms: -5x + -4x = -9x
20 = -12 + -9x

Solving
20 = -12 + -9x

Solving for variable 'x'.

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

Add '9x' to each side of the equation.
20 + 9x = -12 + -9x + 9x

Combine like terms: -9x + 9x = 0
20 + 9x = -12 + 0
20 + 9x = -12

Add '-20' to each side of the equation.
20 + -20 + 9x = -12 + -20

Combine like terms: 20 + -20 = 0
0 + 9x = -12 + -20
9x = -12 + -20

Combine like terms: -12 + -20 = -32
9x = -32

Divide each side by '9'.
x = -3.555555556

Simplifying
x = -3.555555556

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