315=216+x

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Solution for 315=216+x equation:


Simplifying
315 = 216 + x

Solving
315 = 216 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
315 + -1x = 216 + x + -1x

Combine like terms: x + -1x = 0
315 + -1x = 216 + 0
315 + -1x = 216

Add '-315' to each side of the equation.
315 + -315 + -1x = 216 + -315

Combine like terms: 315 + -315 = 0
0 + -1x = 216 + -315
-1x = 216 + -315

Combine like terms: 216 + -315 = -99
-1x = -99

Divide each side by '-1'.
x = 99

Simplifying
x = 99

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