15b+3(2b-7)-9(4+5b)=

Solution for 15b+3(2b-7)-9(4+5b)= equation:

Simplifying
15b + 3(2b + -7) + -9(4 + 5b) = 0

Reorder the terms:
15b + 3(-7 + 2b) + -9(4 + 5b) = 0
15b + (-7 * 3 + 2b * 3) + -9(4 + 5b) = 0
15b + (-21 + 6b) + -9(4 + 5b) = 0
15b + -21 + 6b + (4 * -9 + 5b * -9) = 0
15b + -21 + 6b + (-36 + -45b) = 0

Reorder the terms:
-21 + -36 + 15b + 6b + -45b = 0

Combine like terms: -21 + -36 = -57
-57 + 15b + 6b + -45b = 0

Combine like terms: 15b + 6b = 21b
-57 + 21b + -45b = 0

Combine like terms: 21b + -45b = -24b
-57 + -24b = 0

Solving
-57 + -24b = 0

Solving for variable 'b'.

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

Add '57' to each side of the equation.
-57 + 57 + -24b = 0 + 57

Combine like terms: -57 + 57 = 0
0 + -24b = 0 + 57
-24b = 0 + 57

Combine like terms: 0 + 57 = 57
-24b = 57

Divide each side by '-24'.
b = -2.375

Simplifying
b = -2.375