Distribute and simplify.
(
7
x
+
7
)
9
x
=
\displaystyle {\left({7}{x}+{7}\right)}{9}{x}=
(
7
x
+
7
)
9
x
=
7
x
×
\displaystyle {7}{x}\times
7
x
×
+
\displaystyle +
+
7
×
\displaystyle {7}\times
7
×
=
\displaystyle =
=
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