9(a+3)=90

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Solution for 9(a+3)=90 equation: 


Simplifying
9(a + 3) = 90

Reorder the terms:
9(3 + a) = 90
(3 * 9 + a * 9) = 90
(27 + 9a) = 90

Solving
27 + 9a = 90

Solving for variable 'a'.

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

Add '-27' to each side of the equation.
27 + -27 + 9a = 90 + -27

Combine like terms: 27 + -27 = 0
0 + 9a = 90 + -27
9a = 90 + -27

Combine like terms: 90 + -27 = 63
9a = 63

Divide each side by '9'.
a = 7

Simplifying
a = 7

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