18-3a=3a-18

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Solution for 18-3a=3a-18 equation:


Simplifying
18 + -3a = 3a + -18

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

Solving
18 + -3a = -18 + 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.
18 + -3a + -3a = -18 + 3a + -3a

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

Combine like terms: 3a + -3a = 0
18 + -6a = -18 + 0
18 + -6a = -18

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

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

Combine like terms: -18 + -18 = -36
-6a = -36

Divide each side by '-6'.
a = 6

Simplifying
a = 6

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