2a-17+20-9=

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Solution for 2a-17+20-9= equation:


Simplifying
2a + -17 + 20 + -9 = 0

Reorder the terms:
-17 + 20 + -9 + 2a = 0

Combine like terms: -17 + 20 = 3
3 + -9 + 2a = 0

Combine like terms: 3 + -9 = -6
-6 + 2a = 0

Solving
-6 + 2a = 0

Solving for variable 'a'.

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

Add '6' to each side of the equation.
-6 + 6 + 2a = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 2a = 0 + 6
2a = 0 + 6

Combine like terms: 0 + 6 = 6
2a = 6

Divide each side by '2'.
a = 3

Simplifying
a = 3

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