3.00(20.00+b)=90.00

Solution for 3.00(20.00+b)=90.00 equation:

Simplifying
3.00(20.00 + b) = 90.00
(20.00 * 3.00 + b * 3.00) = 90.00
(60 + 3.00b) = 90.00

Solving
60 + 3.00b = 90.00

Solving for variable 'b'.

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

Add '-60' to each side of the equation.
60 + -60 + 3.00b = 90.00 + -60

Combine like terms: 60 + -60 = 0
0 + 3.00b = 90.00 + -60
3.00b = 90.00 + -60

Combine like terms: 90.00 + -60 = 30
3.00b = 30

Divide each side by '3.00'.
b = 10

Simplifying
b = 10