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Mathematics
Mathematics
Problem
Solve the inequality
7
x
−
9
<
3
x
+
7
7x - 9 < 3x + 7
7
x
−
9
<
3
x
+
7
. The solution set is a)
x
>
4
x>4
x
>
4
b)
x
<
4
x<4
x
<
4
c)
x
≤
4
x\le 4
x
≤
4
d)
x
<
8
5
x<\dfrac{8}{5}
x
<
5
8
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