-3a+3a-15=6-3a

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Solution for -3a+3a-15=6-3a equation:


Simplifying
-3a + 3a + -15 = 6 + -3a

Reorder the terms:
-15 + -3a + 3a = 6 + -3a

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

Solving
-15 = 6 + -3a

Solving for variable 'a'.

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

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

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

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

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

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

Divide each side by '3'.
a = 7

Simplifying
a = 7

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