a-(-4a)=60

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Solution for a-(-4a)=60 equation: 


Simplifying
a + -1(-4a) = 60

Remove parenthesis around (-4a)
a + -1 * -4a = 60

Multiply -1 * -4
a + 4a = 60

Combine like terms: a + 4a = 5a
5a = 60

Solving
5a = 60

Solving for variable 'a'.

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

Divide each side by '5'.
a = 12

Simplifying
a = 12

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