3X-42=2X-30

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Solution for 3X-42=2X-30 equation:


Simplifying
3X + -42 = 2X + -30

Reorder the terms:
-42 + 3X = 2X + -30

Reorder the terms:
-42 + 3X = -30 + 2X

Solving
-42 + 3X = -30 + 2X

Solving for variable 'X'.

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

Add '-2X' to each side of the equation.
-42 + 3X + -2X = -30 + 2X + -2X

Combine like terms: 3X + -2X = 1X
-42 + 1X = -30 + 2X + -2X

Combine like terms: 2X + -2X = 0
-42 + 1X = -30 + 0
-42 + 1X = -30

Add '42' to each side of the equation.
-42 + 42 + 1X = -30 + 42

Combine like terms: -42 + 42 = 0
0 + 1X = -30 + 42
1X = -30 + 42

Combine like terms: -30 + 42 = 12
1X = 12

Divide each side by '1'.
X = 12

Simplifying
X = 12

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