10x-5-81+21x=45

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Solution for 10x-5-81+21x=45 equation:


Simplifying
10x + -5 + -81 + 21x = 45

Reorder the terms:
-5 + -81 + 10x + 21x = 45

Combine like terms: -5 + -81 = -86
-86 + 10x + 21x = 45

Combine like terms: 10x + 21x = 31x
-86 + 31x = 45

Solving
-86 + 31x = 45

Solving for variable 'x'.

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

Add '86' to each side of the equation.
-86 + 86 + 31x = 45 + 86

Combine like terms: -86 + 86 = 0
0 + 31x = 45 + 86
31x = 45 + 86

Combine like terms: 45 + 86 = 131
31x = 131

Divide each side by '31'.
x = 4.225806452

Simplifying
x = 4.225806452

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