4(a-3)+6=9a+15-12a

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Solution for 4(a-3)+6=9a+15-12a equation:


Simplifying
4(a + -3) + 6 = 9a + 15 + -12a

Reorder the terms:
4(-3 + a) + 6 = 9a + 15 + -12a
(-3 * 4 + a * 4) + 6 = 9a + 15 + -12a
(-12 + 4a) + 6 = 9a + 15 + -12a

Reorder the terms:
-12 + 6 + 4a = 9a + 15 + -12a

Combine like terms: -12 + 6 = -6
-6 + 4a = 9a + 15 + -12a

Reorder the terms:
-6 + 4a = 15 + 9a + -12a

Combine like terms: 9a + -12a = -3a
-6 + 4a = 15 + -3a

Solving
-6 + 4a = 15 + -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.
-6 + 4a + 3a = 15 + -3a + 3a

Combine like terms: 4a + 3a = 7a
-6 + 7a = 15 + -3a + 3a

Combine like terms: -3a + 3a = 0
-6 + 7a = 15 + 0
-6 + 7a = 15

Add '6' to each side of the equation.
-6 + 6 + 7a = 15 + 6

Combine like terms: -6 + 6 = 0
0 + 7a = 15 + 6
7a = 15 + 6

Combine like terms: 15 + 6 = 21
7a = 21

Divide each side by '7'.
a = 3

Simplifying
a = 3

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