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x
−
9
=
4
x-9=4
x
−
9
=
4
+
−
.
ln
>
<
×
÷
/
log
≥
≤
(
)
log
x
=
%
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"(x+1)/2+4=7"
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x-9=4
x-9=4
x-9=4
1
Add
9
9
9
to both sides.
x
=
4
+
9
x=4+9
x
=
4
+
9
2
Simplify
4
+
9
4+9
4
+
9
to
13
13
1
3
.
x
=
13
x=13
x
=
1
3
Done
Check Answer ▼
x=13
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