-213-3x=129+15r

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Solution for -213-3x=129+15r equation: 


Simplifying
-213 + -3x = 129 + 15r

Solving
-213 + -3x = 129 + 15r

Solving for variable 'x'.

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

Add '213' to each side of the equation.
-213 + 213 + -3x = 129 + 213 + 15r

Combine like terms: -213 + 213 = 0
0 + -3x = 129 + 213 + 15r
-3x = 129 + 213 + 15r

Combine like terms: 129 + 213 = 342
-3x = 342 + 15r

Divide each side by '-3'.
x = -114 + -5r

Simplifying
x = -114 + -5r

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