3(5am-4)=

Solution for 3(5am-4)= equation:

Simplifying
3(5am + -4) = 0

Reorder the terms:
3(-4 + 5am) = 0
(-4 * 3 + 5am * 3) = 0
(-12 + 15am) = 0

Solving
-12 + 15am = 0

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 + 15am = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 15am = 0 + 12
15am = 0 + 12

Combine like terms: 0 + 12 = 12
15am = 12

Divide each side by '15m'.
a = 0.8m-1

Simplifying
a = 0.8m-1