x-57=15-3x

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Solution for x-57=15-3x equation:


Simplifying
x + -57 = 15 + -3x

Reorder the terms:
-57 + x = 15 + -3x

Solving
-57 + x = 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.
-57 + x + 3x = 15 + -3x + 3x

Combine like terms: x + 3x = 4x
-57 + 4x = 15 + -3x + 3x

Combine like terms: -3x + 3x = 0
-57 + 4x = 15 + 0
-57 + 4x = 15

Add '57' to each side of the equation.
-57 + 57 + 4x = 15 + 57

Combine like terms: -57 + 57 = 0
0 + 4x = 15 + 57
4x = 15 + 57

Combine like terms: 15 + 57 = 72
4x = 72

Divide each side by '4'.
x = 18

Simplifying
x = 18

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