12a-4a-(-2a)=140

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Solution for 12a-4a-(-2a)=140 equation: 


Simplifying
12a + -4a + -1(-2a) = 140

Remove parenthesis around (-2a)
12a + -4a + -1 * -2a = 140

Multiply -1 * -2
12a + -4a + 2a = 140

Combine like terms: 12a + -4a = 8a
8a + 2a = 140

Combine like terms: 8a + 2a = 10a
10a = 140

Solving
10a = 140

Solving for variable 'a'.

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

Divide each side by '10'.
a = 14

Simplifying
a = 14

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