3a+8+a-9-2a=

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Solution for 3a+8+a-9-2a= equation:


Simplifying
3a + 8 + a + -9 + -2a = 0

Reorder the terms:
8 + -9 + 3a + a + -2a = 0

Combine like terms: 8 + -9 = -1
-1 + 3a + a + -2a = 0

Combine like terms: 3a + a = 4a
-1 + 4a + -2a = 0

Combine like terms: 4a + -2a = 2a
-1 + 2a = 0

Solving
-1 + 2a = 0

Solving for variable 'a'.

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

Add '1' to each side of the equation.
-1 + 1 + 2a = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 2a = 0 + 1
2a = 0 + 1

Combine like terms: 0 + 1 = 1
2a = 1

Divide each side by '2'.
a = 0.5

Simplifying
a = 0.5

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