9=4a+16

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Solution for 9=4a+16 equation:


Simplifying
9 = 4a + 16

Reorder the terms:
9 = 16 + 4a

Solving
9 = 16 + 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
9 + -4a = 16 + 4a + -4a

Combine like terms: 4a + -4a = 0
9 + -4a = 16 + 0
9 + -4a = 16

Add '-9' to each side of the equation.
9 + -9 + -4a = 16 + -9

Combine like terms: 9 + -9 = 0
0 + -4a = 16 + -9
-4a = 16 + -9

Combine like terms: 16 + -9 = 7
-4a = 7

Divide each side by '-4'.
a = -1.75

Simplifying
a = -1.75

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