9a-4=3a+20

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Solution for 9a-4=3a+20 equation:


Simplifying
9a + -4 = 3a + 20

Reorder the terms:
-4 + 9a = 3a + 20

Reorder the terms:
-4 + 9a = 20 + 3a

Solving
-4 + 9a = 20 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
-4 + 9a + -3a = 20 + 3a + -3a

Combine like terms: 9a + -3a = 6a
-4 + 6a = 20 + 3a + -3a

Combine like terms: 3a + -3a = 0
-4 + 6a = 20 + 0
-4 + 6a = 20

Add '4' to each side of the equation.
-4 + 4 + 6a = 20 + 4

Combine like terms: -4 + 4 = 0
0 + 6a = 20 + 4
6a = 20 + 4

Combine like terms: 20 + 4 = 24
6a = 24

Divide each side by '6'.
a = 4

Simplifying
a = 4

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