3a-42=3(a+4)

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Solution for 3a-42=3(a+4) equation: 


Simplifying
3a + -42 = 3(a + 4)

Reorder the terms:
-42 + 3a = 3(a + 4)

Reorder the terms:
-42 + 3a = 3(4 + a)
-42 + 3a = (4 * 3 + a * 3)
-42 + 3a = (12 + 3a)

Add '-3a' to each side of the equation.
-42 + 3a + -3a = 12 + 3a + -3a

Combine like terms: 3a + -3a = 0
-42 + 0 = 12 + 3a + -3a
-42 = 12 + 3a + -3a

Combine like terms: 3a + -3a = 0
-42 = 12 + 0
-42 = 12

Solving
-42 = 12

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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