Reference
Practice
Premium
Log In
English
English ✔
Español
日本語
简体中文
繁體中文
3
x
−
9
=
9
3x-9=9
3
x
−
9
=
9
+
−
.
ln
>
<
×
÷
/
log
≥
≤
(
)
log
x
=
%
Choose Topic
Examples
"(x+1)/2+4=7"
"factor x^2+5x+6"
"integrate cos(x)^3"
More »
3x-9=9
3x-9=9
3x-9=9
1
Add
9
9
9
to both sides.
3
x
=
9
+
9
3x=9+9
3
x
=
9
+
9
2
Simplify
9
+
9
9+9
9
+
9
to
18
18
1
8
.
3
x
=
18
3x=18
3
x
=
1
8
3
Divide both sides by
3
3
3
.
x
=
18
3
x=\frac{18}{3}
x
=
3
1
8
4
Simplify
18
3
\frac{18}{3}
3
1
8
to
6
6
6
.
x
=
6
x=6
x
=
6
Done
Check Answer ▼
x=6
Like this solution? Share it!
Copy Link
How can we make this solution more helpful?