-4(x-9)=20

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


Simplifying
-4(x + -9) = 20

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

Solving
36 + -4x = 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 + -4x = 20 + -36

Combine like terms: 36 + -36 = 0
0 + -4x = 20 + -36
-4x = 20 + -36

Combine like terms: 20 + -36 = -16
-4x = -16

Divide each side by '-4'.
x = 4

Simplifying
x = 4

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