80-(4x+15)=4(x+5)+x

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Solution for 80-(4x+15)=4(x+5)+x equation:


Simplifying
80 + -1(4x + 15) = 4(x + 5) + x

Reorder the terms:
80 + -1(15 + 4x) = 4(x + 5) + x
80 + (15 * -1 + 4x * -1) = 4(x + 5) + x
80 + (-15 + -4x) = 4(x + 5) + x

Combine like terms: 80 + -15 = 65
65 + -4x = 4(x + 5) + x

Reorder the terms:
65 + -4x = 4(5 + x) + x
65 + -4x = (5 * 4 + x * 4) + x
65 + -4x = (20 + 4x) + x

Combine like terms: 4x + x = 5x
65 + -4x = 20 + 5x

Solving
65 + -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.
65 + -4x + -5x = 20 + 5x + -5x

Combine like terms: -4x + -5x = -9x
65 + -9x = 20 + 5x + -5x

Combine like terms: 5x + -5x = 0
65 + -9x = 20 + 0
65 + -9x = 20

Add '-65' to each side of the equation.
65 + -65 + -9x = 20 + -65

Combine like terms: 65 + -65 = 0
0 + -9x = 20 + -65
-9x = 20 + -65

Combine like terms: 20 + -65 = -45
-9x = -45

Divide each side by '-9'.
x = 5

Simplifying
x = 5

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