9(x-8)=5(x+20)

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Solution for 9(x-8)=5(x+20) equation:


Simplifying
9(x + -8) = 5(x + 20)

Reorder the terms:
9(-8 + x) = 5(x + 20)
(-8 * 9 + x * 9) = 5(x + 20)
(-72 + 9x) = 5(x + 20)

Reorder the terms:
-72 + 9x = 5(20 + x)
-72 + 9x = (20 * 5 + x * 5)
-72 + 9x = (100 + 5x)

Solving
-72 + 9x = 100 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-72 + 9x + -5x = 100 + 5x + -5x

Combine like terms: 9x + -5x = 4x
-72 + 4x = 100 + 5x + -5x

Combine like terms: 5x + -5x = 0
-72 + 4x = 100 + 0
-72 + 4x = 100

Add '72' to each side of the equation.
-72 + 72 + 4x = 100 + 72

Combine like terms: -72 + 72 = 0
0 + 4x = 100 + 72
4x = 100 + 72

Combine like terms: 100 + 72 = 172
4x = 172

Divide each side by '4'.
x = 43

Simplifying
x = 43

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