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\[5+10\]
+
−
.
ln
>
<
×
÷
/
log
≥
≤
(
)
log
x
=
%
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"(x+1)/2+4=7"
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5+10
5+10
5+10
1
Use a number line.
0
2
4
6
8
10
12
14
2
Therefore,
5
+
10
=
15
5+10=15
5
+
1
0
=
1
5
.
15
15
1
5
Done
15
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