x*2+9=81

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Solution for x*2+9=81 equation:


Simplifying
x * 2 + 9 = 81

Reorder the terms for easier multiplication:
2x + 9 = 81

Reorder the terms:
9 + 2x = 81

Solving
9 + 2x = 81

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 2x = 81 + -9

Combine like terms: 9 + -9 = 0
0 + 2x = 81 + -9
2x = 81 + -9

Combine like terms: 81 + -9 = 72
2x = 72

Divide each side by '2'.
x = 36

Simplifying
x = 36

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