6(a+3)=90

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Solution for 6(a+3)=90 equation: 


Simplifying
6(a + 3) = 90

Reorder the terms:
6(3 + a) = 90
(3 * 6 + a * 6) = 90
(18 + 6a) = 90

Solving
18 + 6a = 90

Solving for variable 'a'.

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

Add '-18' to each side of the equation.
18 + -18 + 6a = 90 + -18

Combine like terms: 18 + -18 = 0
0 + 6a = 90 + -18
6a = 90 + -18

Combine like terms: 90 + -18 = 72
6a = 72

Divide each side by '6'.
a = 12

Simplifying
a = 12

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