4a-16=21a

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Solution for 4a-16=21a equation:


Simplifying
4a + -16 = 21a

Reorder the terms:
-16 + 4a = 21a

Solving
-16 + 4a = 21a

Solving for variable 'a'.

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

Add '-21a' to each side of the equation.
-16 + 4a + -21a = 21a + -21a

Combine like terms: 4a + -21a = -17a
-16 + -17a = 21a + -21a

Combine like terms: 21a + -21a = 0
-16 + -17a = 0

Add '16' to each side of the equation.
-16 + 16 + -17a = 0 + 16

Combine like terms: -16 + 16 = 0
0 + -17a = 0 + 16
-17a = 0 + 16

Combine like terms: 0 + 16 = 16
-17a = 16

Divide each side by '-17'.
a = -0.9411764706

Simplifying
a = -0.9411764706

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