-5a+3+6a=12-21

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Solution for -5a+3+6a=12-21 equation:


Simplifying
-5a + 3 + 6a = 12 + -21

Reorder the terms:
3 + -5a + 6a = 12 + -21

Combine like terms: -5a + 6a = 1a
3 + 1a = 12 + -21

Combine like terms: 12 + -21 = -9
3 + 1a = -9

Solving
3 + 1a = -9

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 1a = -9 + -3

Combine like terms: 3 + -3 = 0
0 + 1a = -9 + -3
1a = -9 + -3

Combine like terms: -9 + -3 = -12
1a = -12

Divide each side by '1'.
a = -12

Simplifying
a = -12

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