9-2a-4=8+a

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Solution for 9-2a-4=8+a equation:


Simplifying
9 + -2a + -4 = 8 + a

Reorder the terms:
9 + -4 + -2a = 8 + a

Combine like terms: 9 + -4 = 5
5 + -2a = 8 + a

Solving
5 + -2a = 8 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
5 + -2a + -1a = 8 + a + -1a

Combine like terms: -2a + -1a = -3a
5 + -3a = 8 + a + -1a

Combine like terms: a + -1a = 0
5 + -3a = 8 + 0
5 + -3a = 8

Add '-5' to each side of the equation.
5 + -5 + -3a = 8 + -5

Combine like terms: 5 + -5 = 0
0 + -3a = 8 + -5
-3a = 8 + -5

Combine like terms: 8 + -5 = 3
-3a = 3

Divide each side by '-3'.
a = -1

Simplifying
a = -1

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