21-7a=14b

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Solution for 21-7a=14b equation: 


Simplifying
21 + -7a = 14b

Solving
21 + -7a = 14b

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -21 + -7a = -21 + 14b

Combine like terms: 21 + -21 = 0
0 + -7a = -21 + 14b
-7a = -21 + 14b

Divide each side by '-7'.
a = 3 + -2b

Simplifying
a = 3 + -2b

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