-3x+4(-x+9)=-20

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Solution for -3x+4(-x+9)=-20 equation:


Simplifying
-3x + 4(-1x + 9) = -20

Reorder the terms:
-3x + 4(9 + -1x) = -20
-3x + (9 * 4 + -1x * 4) = -20
-3x + (36 + -4x) = -20

Reorder the terms:
36 + -3x + -4x = -20

Combine like terms: -3x + -4x = -7x
36 + -7x = -20

Solving
36 + -7x = -20

Solving for variable 'x'.

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

Add '-36' to each side of the equation.
36 + -36 + -7x = -20 + -36

Combine like terms: 36 + -36 = 0
0 + -7x = -20 + -36
-7x = -20 + -36

Combine like terms: -20 + -36 = -56
-7x = -56

Divide each side by '-7'.
x = 8

Simplifying
x = 8

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