60=4(-3a)

Solution for 60=4(-3a) equation:

Simplifying
60 = 4(-3a)

Remove parenthesis around (-3a)
60 = 4 * -3a

Multiply 4 * -3
60 = -12a

Solving
60 = -12a

Solving for variable 'a'.

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

Add '12a' to each side of the equation.
60 + 12a = -12a + 12a

Combine like terms: -12a + 12a = 0
60 + 12a = 0

Add '-60' to each side of the equation.
60 + -60 + 12a = 0 + -60

Combine like terms: 60 + -60 = 0
0 + 12a = 0 + -60
12a = 0 + -60

Combine like terms: 0 + -60 = -60
12a = -60

Divide each side by '12'.
a = -5

Simplifying
a = -5