-4(-e+3f)-3(e+(-5f))=0

Solution for -4(-e+3f)-3(e+(-5f))=0 equation:

Simplifying
-4(-1e + 3f) + -3(e + (-5f)) = 0
(-1e * -4 + 3f * -4) + -3(e + (-5f)) = 0
(4e + -12f) + -3(e + (-5f)) = 0
4e + -12f + (e * -3 + (-5f) * -3) = 0
4e + -12f + (-3e + 15f) = 0

Reorder the terms:
4e + -3e + -12f + 15f = 0

Combine like terms: 4e + -3e = 1e
1e + -12f + 15f = 0

Combine like terms: -12f + 15f = 3f
1e + 3f = 0

Solving
1e + 3f = 0

Solving for variable 'e'.

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

Add '-3f' to each side of the equation.
1e + 3f + -3f = 0 + -3f

Combine like terms: 3f + -3f = 0
1e + 0 = 0 + -3f
1e = 0 + -3f
Remove the zero:
1e = -3f

Divide each side by '1'.
e = -3f

Simplifying
e = -3f