-165=3(1-7b)

Solution for -165=3(1-7b) equation:

Simplifying
-165 = 3(1 + -7b)
-165 = (1 * 3 + -7b * 3)
-165 = (3 + -21b)

Solving
-165 = 3 + -21b

Solving for variable 'b'.

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

Add '21b' to each side of the equation.
-165 + 21b = 3 + -21b + 21b

Combine like terms: -21b + 21b = 0
-165 + 21b = 3 + 0
-165 + 21b = 3

Add '165' to each side of the equation.
-165 + 165 + 21b = 3 + 165

Combine like terms: -165 + 165 = 0
0 + 21b = 3 + 165
21b = 3 + 165

Combine like terms: 3 + 165 = 168
21b = 168

Divide each side by '21'.
b = 8

Simplifying
b = 8