Answer:
b=negative 5/2
Step-by-step explanation:
first, convert the decimal into a fraction
−28.3= -3.3+b/1/10
simplify the complex fraction
-28.3=-3.3+10b
add 3.3 to both sides
-25=10x
divide each side by 10
x=negative 5/2 or x=negative 2.5
