-42=-0.75F-3

Solution for -42=-0.75F-3 equation:

Simplifying
-42 = -0.75F + -3

Reorder the terms:
-42 = -3 + -0.75F

Solving
-42 = -3 + -0.75F

Solving for variable 'F'.

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

Add '0.75F' to each side of the equation.
-42 + 0.75F = -3 + -0.75F + 0.75F

Combine like terms: -0.75F + 0.75F = 0.00
-42 + 0.75F = -3 + 0.00
-42 + 0.75F = -3

Add '42' to each side of the equation.
-42 + 42 + 0.75F = -3 + 42

Combine like terms: -42 + 42 = 0
0 + 0.75F = -3 + 42
0.75F = -3 + 42

Combine like terms: -3 + 42 = 39
0.75F = 39

Divide each side by '0.75'.
F = 52

Simplifying
F = 52