a-4a=2a+9

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Solution for a-4a=2a+9 equation:


Simplifying
a + -4a = 2a + 9

Combine like terms: a + -4a = -3a
-3a = 2a + 9

Reorder the terms:
-3a = 9 + 2a

Solving
-3a = 9 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
-3a + -2a = 9 + 2a + -2a

Combine like terms: -3a + -2a = -5a
-5a = 9 + 2a + -2a

Combine like terms: 2a + -2a = 0
-5a = 9 + 0
-5a = 9

Divide each side by '-5'.
a = -1.8

Simplifying
a = -1.8

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