-1-7b=-8(8-7b)

Solution for -1-7b=-8(8-7b) equation:

Simplifying
-1 + -7b = -8(8 + -7b)
-1 + -7b = (8 * -8 + -7b * -8)
-1 + -7b = (-64 + 56b)

Solving
-1 + -7b = -64 + 56b

Solving for variable 'b'.

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

Add '-56b' to each side of the equation.
-1 + -7b + -56b = -64 + 56b + -56b

Combine like terms: -7b + -56b = -63b
-1 + -63b = -64 + 56b + -56b

Combine like terms: 56b + -56b = 0
-1 + -63b = -64 + 0
-1 + -63b = -64

Add '1' to each side of the equation.
-1 + 1 + -63b = -64 + 1

Combine like terms: -1 + 1 = 0
0 + -63b = -64 + 1
-63b = -64 + 1

Combine like terms: -64 + 1 = -63
-63b = -63

Divide each side by '-63'.
b = 1

Simplifying
b = 1