b+1.5b+2b-90+b+45+90=540

Solution for b+1.5b+2b-90+b+45+90=540 equation:

Simplifying
b + 1.5b + 2b + -90 + b + 45 + 90 = 540

Reorder the terms:
-90 + 45 + 90 + b + 1.5b + 2b + b = 540

Combine like terms: -90 + 45 = -45
-45 + 90 + b + 1.5b + 2b + b = 540

Combine like terms: -45 + 90 = 45
45 + b + 1.5b + 2b + b = 540

Combine like terms: b + 1.5b = 2.5b
45 + 2.5b + 2b + b = 540

Combine like terms: 2.5b + 2b = 4.5b
45 + 4.5b + b = 540

Combine like terms: 4.5b + b = 5.5b
45 + 5.5b = 540

Solving
45 + 5.5b = 540

Solving for variable 'b'.

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

Add '-45' to each side of the equation.
45 + -45 + 5.5b = 540 + -45

Combine like terms: 45 + -45 = 0
0 + 5.5b = 540 + -45
5.5b = 540 + -45

Combine like terms: 540 + -45 = 495
5.5b = 495

Divide each side by '5.5'.
b = 90

Simplifying
b = 90