3x+-168=21

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Solution for 3x+-168=21 equation: 


Simplifying
3x + -168 = 21

Reorder the terms:
-168 + 3x = 21

Solving
-168 + 3x = 21

Solving for variable 'x'.

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

Add '168' to each side of the equation.
-168 + 168 + 3x = 21 + 168

Combine like terms: -168 + 168 = 0
0 + 3x = 21 + 168
3x = 21 + 168

Combine like terms: 21 + 168 = 189
3x = 189

Divide each side by '3'.
x = 63

Simplifying
x = 63

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