3(5a-3a)+45=

Solution for 3(5a-3a)+45= equation:

Simplifying
3(5a + -3a) + 45 = 0

Combine like terms: 5a + -3a = 2a
3(2a) + 45 = 0

Remove parenthesis around (2a)
3 * 2a + 45 = 0

Multiply 3 * 2
6a + 45 = 0

Reorder the terms:
45 + 6a = 0

Solving
45 + 6a = 0

Solving for variable 'a'.

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

Add '-45' to each side of the equation.
45 + -45 + 6a = 0 + -45

Combine like terms: 45 + -45 = 0
0 + 6a = 0 + -45
6a = 0 + -45

Combine like terms: 0 + -45 = -45
6a = -45

Divide each side by '6'.
a = -7.5

Simplifying
a = -7.5