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Pre-Algebra Examples
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Pre-Algebra
Simplify x-9x+3+8x-3
x
−
9
x
+
3
+
8
x
−
3
x
-
9
x
+
3
+
8
x
-
3
Step 1
Combine
the opposite
terms
in
x
−
9
x
+
3
+
8
x
−
3
x
-
9
x
+
3
+
8
x
-
3
.
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Step 1.1
Subtract
3
3
from
3
3
.
x
−
9
x
+
8
x
+
0
x
-
9
x
+
8
x
+
0
Step 1.2
Add
x
−
9
x
+
8
x
x
-
9
x
+
8
x
and
0
0
.
x
−
9
x
+
8
x
x
-
9
x
+
8
x
x
−
9
x
+
8
x
x
-
9
x
+
8
x
Step 2
Subtract
9
x
9
x
from
x
x
.
−
8
x
+
8
x
-
8
x
+
8
x
Step 3
Add
−
8
x
-
8
x
and
8
x
8
x
.
0
0
x
−
9
x
+
3
+
8
x
−
3
x
-
9
x
+
3
+
8
x
-
3
(
(
)
)
|
|
[
[
]
]
√
√
≥
≥
π
π
7
7
8
8
9
9
≤
≤
4
4
5
5
6
6
/
/
^
^
×
×
>
>
!
!
1
1
2
2
3
3
-
-
+
+
÷
÷
<
<
,
,
0
0
.
.
%
%
=
=
⎡
⎢
⎣
x
2
1
2
√
π
∫
x
d
x
⎤
⎥
⎦
[
x
2
1
2
π
∫
x
d
x
]
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