3(a-10)=42

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Solution for 3(a-10)=42 equation:


Simplifying
3(a + -10) = 42

Reorder the terms:
3(-10 + a) = 42
(-10 * 3 + a * 3) = 42
(-30 + 3a) = 42

Solving
-30 + 3a = 42

Solving for variable 'a'.

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

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

Combine like terms: -30 + 30 = 0
0 + 3a = 42 + 30
3a = 42 + 30

Combine like terms: 42 + 30 = 72
3a = 72

Divide each side by '3'.
a = 24

Simplifying
a = 24

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