-42+x=-3x+78

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Solution for -42+x=-3x+78 equation:


Simplifying
-42 + x = -3x + 78

Reorder the terms:
-42 + x = 78 + -3x

Solving
-42 + x = 78 + -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.
-42 + x + 3x = 78 + -3x + 3x

Combine like terms: x + 3x = 4x
-42 + 4x = 78 + -3x + 3x

Combine like terms: -3x + 3x = 0
-42 + 4x = 78 + 0
-42 + 4x = 78

Add '42' to each side of the equation.
-42 + 42 + 4x = 78 + 42

Combine like terms: -42 + 42 = 0
0 + 4x = 78 + 42
4x = 78 + 42

Combine like terms: 78 + 42 = 120
4x = 120

Divide each side by '4'.
x = 30

Simplifying
x = 30

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