3x+56-21=12

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Solution for 3x+56-21=12 equation:


Simplifying
3x + 56 + -21 = 12

Reorder the terms:
56 + -21 + 3x = 12

Combine like terms: 56 + -21 = 35
35 + 3x = 12

Solving
35 + 3x = 12

Solving for variable 'x'.

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

Add '-35' to each side of the equation.
35 + -35 + 3x = 12 + -35

Combine like terms: 35 + -35 = 0
0 + 3x = 12 + -35
3x = 12 + -35

Combine like terms: 12 + -35 = -23
3x = -23

Divide each side by '3'.
x = -7.666666667

Simplifying
x = -7.666666667

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