4+2(3a-5)=30

Solution for 4+2(3a-5)=30 equation:

Simplifying
4 + 2(3a + -5) = 30

Reorder the terms:
4 + 2(-5 + 3a) = 30
4 + (-5 * 2 + 3a * 2) = 30
4 + (-10 + 6a) = 30

Combine like terms: 4 + -10 = -6
-6 + 6a = 30

Solving
-6 + 6a = 30

Solving for variable 'a'.

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

Add '6' to each side of the equation.
-6 + 6 + 6a = 30 + 6

Combine like terms: -6 + 6 = 0
0 + 6a = 30 + 6
6a = 30 + 6

Combine like terms: 30 + 6 = 36
6a = 36

Divide each side by '6'.
a = 6

Simplifying
a = 6