7+(6a-3a)=-20

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Solution for 7+(6a-3a)=-20 equation: 


Simplifying
7 + (6a + -3a) = -20

Combine like terms: 6a + -3a = 3a
7 + (3a) = -20
7 + (3a) = -20

Solving
7 + (3a) = -20

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + (3a) = -20 + -7

Combine like terms: 7 + -7 = 0
0 + (3a) = -20 + -7
(3a) = -20 + -7

Combine like terms: -20 + -7 = -27
(3a) = -27

Divide each side by '3'.
a = -9

Simplifying
a = -9

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