7(9-3a)=

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Solution for 7(9-3a)= equation: 


Simplifying
7(9 + -3a) = 0
(9 * 7 + -3a * 7) = 0
(63 + -21a) = 0

Solving
63 + -21a = 0

Solving for variable 'a'.

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

Add '-63' to each side of the equation.
63 + -63 + -21a = 0 + -63

Combine like terms: 63 + -63 = 0
0 + -21a = 0 + -63
-21a = 0 + -63

Combine like terms: 0 + -63 = -63
-21a = -63

Divide each side by '-21'.
a = 3

Simplifying
a = 3

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