63+12a=15a

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Solution for 63+12a=15a equation:


Simplifying
63 + 12a = 15a

Solving
63 + 12a = 15a

Solving for variable 'a'.

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

Add '-15a' to each side of the equation.
63 + 12a + -15a = 15a + -15a

Combine like terms: 12a + -15a = -3a
63 + -3a = 15a + -15a

Combine like terms: 15a + -15a = 0
63 + -3a = 0

Add '-63' to each side of the equation.
63 + -63 + -3a = 0 + -63

Combine like terms: 63 + -63 = 0
0 + -3a = 0 + -63
-3a = 0 + -63

Combine like terms: 0 + -63 = -63
-3a = -63

Divide each side by '-3'.
a = 21

Simplifying
a = 21

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