81=8x+5

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Solution for 81=8x+5 equation:


Simplifying
81 = 8x + 5

Reorder the terms:
81 = 5 + 8x

Solving
81 = 5 + 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 + -8x = 5 + 8x + -8x

Combine like terms: 8x + -8x = 0
81 + -8x = 5 + 0
81 + -8x = 5

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

Combine like terms: 81 + -81 = 0
0 + -8x = 5 + -81
-8x = 5 + -81

Combine like terms: 5 + -81 = -76
-8x = -76

Divide each side by '-8'.
x = 9.5

Simplifying
x = 9.5

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