6a-3(4-5)=30

Solution for 6a-3(4-5)=30 equation:

Simplifying
6a + -3(4 + -5) = 30

Combine like terms: 4 + -5 = -1
6a + -3(-1) = 30

Multiply -3 * -1
6a + 3 = 30

Reorder the terms:
3 + 6a = 30

Solving
3 + 6a = 30

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 6a = 30 + -3

Combine like terms: 3 + -3 = 0
0 + 6a = 30 + -3
6a = 30 + -3

Combine like terms: 30 + -3 = 27
6a = 27

Divide each side by '6'.
a = 4.5

Simplifying
a = 4.5