3(7a-9)=

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

Simplifying
3(7a + -9) = 0

Reorder the terms:
3(-9 + 7a) = 0
(-9 * 3 + 7a * 3) = 0
(-27 + 21a) = 0

Solving
-27 + 21a = 0

Solving for variable 'a'.

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

Add '27' to each side of the equation.
-27 + 27 + 21a = 0 + 27

Combine like terms: -27 + 27 = 0
0 + 21a = 0 + 27
21a = 0 + 27

Combine like terms: 0 + 27 = 27
21a = 27

Divide each side by '21'.
a = 1.285714286

Simplifying
a = 1.285714286