9x-4(x+2)=x+20

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Solution for 9x-4(x+2)=x+20 equation:


Simplifying
9x + -4(x + 2) = x + 20

Reorder the terms:
9x + -4(2 + x) = x + 20
9x + (2 * -4 + x * -4) = x + 20
9x + (-8 + -4x) = x + 20

Reorder the terms:
-8 + 9x + -4x = x + 20

Combine like terms: 9x + -4x = 5x
-8 + 5x = x + 20

Reorder the terms:
-8 + 5x = 20 + x

Solving
-8 + 5x = 20 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-8 + 5x + -1x = 20 + x + -1x

Combine like terms: 5x + -1x = 4x
-8 + 4x = 20 + x + -1x

Combine like terms: x + -1x = 0
-8 + 4x = 20 + 0
-8 + 4x = 20

Add '8' to each side of the equation.
-8 + 8 + 4x = 20 + 8

Combine like terms: -8 + 8 = 0
0 + 4x = 20 + 8
4x = 20 + 8

Combine like terms: 20 + 8 = 28
4x = 28

Divide each side by '4'.
x = 7

Simplifying
x = 7

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