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 = 125
b = 180 + -1(125 + b)
b = 180 + (125 * -1 + b * -1)
b = 180 + (-125 + -1b)

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

Solving
b = 55 + -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 = 55 + -1b + b

Combine like terms: b + b = 2b
2b = 55 + -1b + b

Combine like terms: -1b + b = 0
2b = 55 + 0
2b = 55

Divide each side by '2'.
b = 27.5

Simplifying
b = 27.5