-15=-2+9(a+3)

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Solution for -15=-2+9(a+3) equation:


Simplifying
-15 = -2 + 9(a + 3)

Reorder the terms:
-15 = -2 + 9(3 + a)
-15 = -2 + (3 * 9 + a * 9)
-15 = -2 + (27 + 9a)

Combine like terms: -2 + 27 = 25
-15 = 25 + 9a

Solving
-15 = 25 + 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
-15 + -9a = 25 + 9a + -9a

Combine like terms: 9a + -9a = 0
-15 + -9a = 25 + 0
-15 + -9a = 25

Add '15' to each side of the equation.
-15 + 15 + -9a = 25 + 15

Combine like terms: -15 + 15 = 0
0 + -9a = 25 + 15
-9a = 25 + 15

Combine like terms: 25 + 15 = 40
-9a = 40

Divide each side by '-9'.
a = -4.444444444

Simplifying
a = -4.444444444

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