-18=9a

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Solution for -18=9a equation:


Simplifying
-18 = 9a

Solving
-18 = 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
-18 + -9a = 9a + -9a

Combine like terms: 9a + -9a = 0
-18 + -9a = 0

Add '18' to each side of the equation.
-18 + 18 + -9a = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -9a = 0 + 18
-9a = 0 + 18

Combine like terms: 0 + 18 = 18
-9a = 18

Divide each side by '-9'.
a = -2

Simplifying
a = -2

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