8a+2a+12=42

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Solution for 8a+2a+12=42 equation:


Simplifying
8a + 2a + 12 = 42

Reorder the terms:
12 + 8a + 2a = 42

Combine like terms: 8a + 2a = 10a
12 + 10a = 42

Solving
12 + 10a = 42

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + -12 + 10a = 42 + -12

Combine like terms: 12 + -12 = 0
0 + 10a = 42 + -12
10a = 42 + -12

Combine like terms: 42 + -12 = 30
10a = 30

Divide each side by '10'.
a = 3

Simplifying
a = 3

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