3a+15=9a-3

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Solution for 3a+15=9a-3 equation:


Simplifying
3a + 15 = 9a + -3

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

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

Solving
15 + 3a = -3 + 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 + 3a + -9a = -3 + 9a + -9a

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

Combine like terms: 9a + -9a = 0
15 + -6a = -3 + 0
15 + -6a = -3

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

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

Combine like terms: -3 + -15 = -18
-6a = -18

Divide each side by '-6'.
a = 3

Simplifying
a = 3

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