6a+18=21-3-6a

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Solution for 6a+18=21-3-6a equation:


Simplifying
6a + 18 = 21 + -3 + -6a

Reorder the terms:
18 + 6a = 21 + -3 + -6a

Combine like terms: 21 + -3 = 18
18 + 6a = 18 + -6a

Add '-18' to each side of the equation.
18 + -18 + 6a = 18 + -18 + -6a

Combine like terms: 18 + -18 = 0
0 + 6a = 18 + -18 + -6a
6a = 18 + -18 + -6a

Combine like terms: 18 + -18 = 0
6a = 0 + -6a
6a = -6a

Solving
6a = -6a

Solving for variable 'a'.

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

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

Combine like terms: 6a + 6a = 12a
12a = -6a + 6a

Combine like terms: -6a + 6a = 0
12a = 0

Divide each side by '12'.
a = 0

Simplifying
a = 0

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