(NOT MY ANSWER)
But its the right one i got it from this website:
geteasysolution.com
Simple and best practice solution for 24-10b=9 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework
Simplifying
24 + -10b = 9
Solving
24 + -10b = 9
Solving for variable 'b'.
Move all terms containing b to the left, all other terms to the right.
Add '-24' to each side of the equation.
24 + -24 + -10b = 9 + -24
Combine like terms: 24 + -24 = 0
0 + -10b = 9 + -24
-10b = 9 + -24
Combine like terms: 9 + -24 = -15
-10b = -15
Divide each side by '-10'.
b = 1.5
Simplifying
b = 1.5
