80-(4x+9)=4(x+2)+x

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Solution for 80-(4x+9)=4(x+2)+x equation:


Simplifying
80 + -1(4x + 9) = 4(x + 2) + x

Reorder the terms:
80 + -1(9 + 4x) = 4(x + 2) + x
80 + (9 * -1 + 4x * -1) = 4(x + 2) + x
80 + (-9 + -4x) = 4(x + 2) + x

Combine like terms: 80 + -9 = 71
71 + -4x = 4(x + 2) + x

Reorder the terms:
71 + -4x = 4(2 + x) + x
71 + -4x = (2 * 4 + x * 4) + x
71 + -4x = (8 + 4x) + x

Combine like terms: 4x + x = 5x
71 + -4x = 8 + 5x

Solving
71 + -4x = 8 + 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.
71 + -4x + -5x = 8 + 5x + -5x

Combine like terms: -4x + -5x = -9x
71 + -9x = 8 + 5x + -5x

Combine like terms: 5x + -5x = 0
71 + -9x = 8 + 0
71 + -9x = 8

Add '-71' to each side of the equation.
71 + -71 + -9x = 8 + -71

Combine like terms: 71 + -71 = 0
0 + -9x = 8 + -71
-9x = 8 + -71

Combine like terms: 8 + -71 = -63
-9x = -63

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

Simplifying
x = 7

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