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Pre-Algebra Examples
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Pre-Algebra
Add (3z+1)+(5+7z)
(
3
z
+
1
)
+
(
5
+
7
z
)
(
3
z
+
1
)
+
(
5
+
7
z
)
Step 1
Remove parentheses.
3
z
+
1
+
5
+
7
z
3
z
+
1
+
5
+
7
z
Step 2
Add
3
z
3
z
and
7
z
7
z
.
10
z
+
1
+
5
10
z
+
1
+
5
Step 3
Add
1
1
and
5
5
.
10
z
+
6
10
z
+
6
[
x
2
1
2
√
π
∫
x
d
x
]
⎡
⎢
⎣
x
2
1
2
√
π
∫
x
d
x
⎤
⎥
⎦
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