-54=-15-3x

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Solution for -54=-15-3x equation:


Simplifying
-54 = -15 + -3x

Solving
-54 = -15 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
-54 + 3x = -15 + -3x + 3x

Combine like terms: -3x + 3x = 0
-54 + 3x = -15 + 0
-54 + 3x = -15

Add '54' to each side of the equation.
-54 + 54 + 3x = -15 + 54

Combine like terms: -54 + 54 = 0
0 + 3x = -15 + 54
3x = -15 + 54

Combine like terms: -15 + 54 = 39
3x = 39

Divide each side by '3'.
x = 13

Simplifying
x = 13

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