2-3a-a=-18

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Solution for 2-3a-a=-18 equation:


Simplifying
2 + -3a + -1a = -18

Combine like terms: -3a + -1a = -4a
2 + -4a = -18

Solving
2 + -4a = -18

Solving for variable 'a'.

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

Add '-2' to each side of the equation.
2 + -2 + -4a = -18 + -2

Combine like terms: 2 + -2 = 0
0 + -4a = -18 + -2
-4a = -18 + -2

Combine like terms: -18 + -2 = -20
-4a = -20

Divide each side by '-4'.
a = 5

Simplifying
a = 5

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