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Pre-Algebra Examples
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Pre-Algebra
Add (7x^4+4-x+3x^3)+(5x^3+3x-9)
(
7
x
4
+
4
−
x
+
3
x
3
)
+
(
5
x
3
+
3
x
−
9
)
(
7
x
4
+
4
-
x
+
3
x
3
)
+
(
5
x
3
+
3
x
-
9
)
Step 1
Simplify the
expression
.
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Step 1.1
Remove parentheses.
7
x
4
+
4
−
x
+
3
x
3
+
5
x
3
+
3
x
−
9
7
x
4
+
4
-
x
+
3
x
3
+
5
x
3
+
3
x
-
9
Step 1.2
Subtract
9
9
from
4
4
.
7
x
4
−
x
+
3
x
3
+
5
x
3
+
3
x
−
5
7
x
4
-
x
+
3
x
3
+
5
x
3
+
3
x
-
5
7
x
4
−
x
+
3
x
3
+
5
x
3
+
3
x
−
5
7
x
4
-
x
+
3
x
3
+
5
x
3
+
3
x
-
5
Step 2
Add
−
x
-
x
and
3
x
3
x
.
7
x
4
+
3
x
3
+
5
x
3
+
2
x
−
5
7
x
4
+
3
x
3
+
5
x
3
+
2
x
-
5
Step 3
Add
3
x
3
3
x
3
and
5
x
3
5
x
3
.
7
x
4
+
8
x
3
+
2
x
−
5
7
x
4
+
8
x
3
+
2
x
-
5
⎡
⎢
⎣
x
2
1
2
√
π
∫
x
d
x
⎤
⎥
⎦
[
x
2
1
2
π
∫
x
d
x
]
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