91-(4x+8)=4(x+5)+x

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Solution for 91-(4x+8)=4(x+5)+x equation:


Simplifying
91 + -1(4x + 8) = 4(x + 5) + x

Reorder the terms:
91 + -1(8 + 4x) = 4(x + 5) + x
91 + (8 * -1 + 4x * -1) = 4(x + 5) + x
91 + (-8 + -4x) = 4(x + 5) + x

Combine like terms: 91 + -8 = 83
83 + -4x = 4(x + 5) + x

Reorder the terms:
83 + -4x = 4(5 + x) + x
83 + -4x = (5 * 4 + x * 4) + x
83 + -4x = (20 + 4x) + x

Combine like terms: 4x + x = 5x
83 + -4x = 20 + 5x

Solving
83 + -4x = 20 + 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.
83 + -4x + -5x = 20 + 5x + -5x

Combine like terms: -4x + -5x = -9x
83 + -9x = 20 + 5x + -5x

Combine like terms: 5x + -5x = 0
83 + -9x = 20 + 0
83 + -9x = 20

Add '-83' to each side of the equation.
83 + -83 + -9x = 20 + -83

Combine like terms: 83 + -83 = 0
0 + -9x = 20 + -83
-9x = 20 + -83

Combine like terms: 20 + -83 = -63
-9x = -63

Divide each side by '-9'.
x = 7

Simplifying
x = 7

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