81-5x=8x+15

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Solution for 81-5x=8x+15 equation:


Simplifying
81 + -5x = 8x + 15

Reorder the terms:
81 + -5x = 15 + 8x

Solving
81 + -5x = 15 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
81 + -5x + -8x = 15 + 8x + -8x

Combine like terms: -5x + -8x = -13x
81 + -13x = 15 + 8x + -8x

Combine like terms: 8x + -8x = 0
81 + -13x = 15 + 0
81 + -13x = 15

Add '-81' to each side of the equation.
81 + -81 + -13x = 15 + -81

Combine like terms: 81 + -81 = 0
0 + -13x = 15 + -81
-13x = 15 + -81

Combine like terms: 15 + -81 = -66
-13x = -66

Divide each side by '-13'.
x = 5.076923077

Simplifying
x = 5.076923077

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