3(f+20)-7=-1

Solution for 3(f+20)-7=-1 equation:

Simplifying
3(f + 20) + -7 = -1

Reorder the terms:
3(20 + f) + -7 = -1
(20 * 3 + f * 3) + -7 = -1
(60 + 3f) + -7 = -1

Reorder the terms:
60 + -7 + 3f = -1

Combine like terms: 60 + -7 = 53
53 + 3f = -1

Solving
53 + 3f = -1

Solving for variable 'f'.

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

Add '-53' to each side of the equation.
53 + -53 + 3f = -1 + -53

Combine like terms: 53 + -53 = 0
0 + 3f = -1 + -53
3f = -1 + -53

Combine like terms: -1 + -53 = -54
3f = -54

Divide each side by '3'.
f = -18

Simplifying
f = -18