-3(a+5)+9=15

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Solution for -3(a+5)+9=15 equation:


Simplifying
-3(a + 5) + 9 = 15

Reorder the terms:
-3(5 + a) + 9 = 15
(5 * -3 + a * -3) + 9 = 15
(-15 + -3a) + 9 = 15

Reorder the terms:
-15 + 9 + -3a = 15

Combine like terms: -15 + 9 = -6
-6 + -3a = 15

Solving
-6 + -3a = 15

Solving for variable 'a'.

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

Add '6' to each side of the equation.
-6 + 6 + -3a = 15 + 6

Combine like terms: -6 + 6 = 0
0 + -3a = 15 + 6
-3a = 15 + 6

Combine like terms: 15 + 6 = 21
-3a = 21

Divide each side by '-3'.
a = -7

Simplifying
a = -7

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