-3x+63=-21

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Solution for -3x+63=-21 equation: 


Simplifying
-3x + 63 = -21

Reorder the terms:
63 + -3x = -21

Solving
63 + -3x = -21

Solving for variable 'x'.

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

Add '-63' to each side of the equation.
63 + -63 + -3x = -21 + -63

Combine like terms: 63 + -63 = 0
0 + -3x = -21 + -63
-3x = -21 + -63

Combine like terms: -21 + -63 = -84
-3x = -84

Divide each side by '-3'.
x = 28

Simplifying
x = 28

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