Answer:
x=24.5
Step-by-step explanation:
-0.5(2x-10)+15.5=45 distribute -0.5 through the parenthesis
-x+5+15.5=45 add the numbers
-x+20.5=45 move constant to the right side and change its sign
-x=45-20.5 subtract the numbers
-x=24.5 change the signs on both sides of the equation
x=-24.5
