Marvin is solving the linear equation 9(x−7)=45
9
(
-
7
)
=
45
for x. His first step is to divide. What does he need to divide, and by what number should he divide it?
9
(
-
7
)
=
45
for x. His first step is to divide. What does he need to divide, and by what number should he divide it?