Which inverse operation is needed to isolate the variable in the equation
r
+
8
.
9
=
17
.
4
?
A. Add 8.9 to both sides.
B. Subtract 8.9 from both sides.
C. Add 17.4 to both sides.
D. Subtract 17.4 from both sides.
1 answer
B. Subtract 8.9 from both sides.