9a-16=20

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Solution for 9a-16=20 equation: 


Simplifying
9a + -16 = 20

Reorder the terms:
-16 + 9a = 20

Solving
-16 + 9a = 20

Solving for variable 'a'.

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

Add '16' to each side of the equation.
-16 + 16 + 9a = 20 + 16

Combine like terms: -16 + 16 = 0
0 + 9a = 20 + 16
9a = 20 + 16

Combine like terms: 20 + 16 = 36
9a = 36

Divide each side by '9'.
a = 4

Simplifying
a = 4

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