b=180-(90+(b-35))

Solution for b=180-(90+(b-35)) equation:

Simplifying
b = 180 + -1(90 + (b + -35))

Reorder the terms:
b = 180 + -1(90 + (-35 + b))

Remove parenthesis around (-35 + b)
b = 180 + -1(90 + -35 + b)

Combine like terms: 90 + -35 = 55
b = 180 + -1(55 + b)
b = 180 + (55 * -1 + b * -1)
b = 180 + (-55 + -1b)

Combine like terms: 180 + -55 = 125
b = 125 + -1b

Solving
b = 125 + -1b

Solving for variable 'b'.

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

Add 'b' to each side of the equation.
b + b = 125 + -1b + b

Combine like terms: b + b = 2b
2b = 125 + -1b + b

Combine like terms: -1b + b = 0
2b = 125 + 0
2b = 125

Divide each side by '2'.
b = 62.5

Simplifying
b = 62.5