9a+3a-20=2a+10

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Solution for 9a+3a-20=2a+10 equation:


Simplifying
9a + 3a + -20 = 2a + 10

Reorder the terms:
-20 + 9a + 3a = 2a + 10

Combine like terms: 9a + 3a = 12a
-20 + 12a = 2a + 10

Reorder the terms:
-20 + 12a = 10 + 2a

Solving
-20 + 12a = 10 + 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.
-20 + 12a + -2a = 10 + 2a + -2a

Combine like terms: 12a + -2a = 10a
-20 + 10a = 10 + 2a + -2a

Combine like terms: 2a + -2a = 0
-20 + 10a = 10 + 0
-20 + 10a = 10

Add '20' to each side of the equation.
-20 + 20 + 10a = 10 + 20

Combine like terms: -20 + 20 = 0
0 + 10a = 10 + 20
10a = 10 + 20

Combine like terms: 10 + 20 = 30
10a = 30

Divide each side by '10'.
a = 3

Simplifying
a = 3

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