81=12x+15

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Solution for 81=12x+15 equation:


Simplifying
81 = 12x + 15

Reorder the terms:
81 = 15 + 12x

Solving
81 = 15 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
81 + -12x = 15 + 12x + -12x

Combine like terms: 12x + -12x = 0
81 + -12x = 15 + 0
81 + -12x = 15

Add '-81' to each side of the equation.
81 + -81 + -12x = 15 + -81

Combine like terms: 81 + -81 = 0
0 + -12x = 15 + -81
-12x = 15 + -81

Combine like terms: 15 + -81 = -66
-12x = -66

Divide each side by '-12'.
x = 5.5

Simplifying
x = 5.5

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