3(3a-4)=30

Solution for 3(3a-4)=30 equation:

Simplifying
3(3a + -4) = 30

Reorder the terms:
3(-4 + 3a) = 30
(-4 * 3 + 3a * 3) = 30
(-12 + 9a) = 30

Solving
-12 + 9a = 30

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + 9a = 30 + 12

Combine like terms: -12 + 12 = 0
0 + 9a = 30 + 12
9a = 30 + 12

Combine like terms: 30 + 12 = 42
9a = 42

Divide each side by '9'.
a = 4.666666667

Simplifying
a = 4.666666667