Question

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Answer 1

5.
$\frac{20}{3x+2}$
x=0,1,2,3,4,5

6.
$\frac{2}{3}$≤$\frac{a+1}{6}$<$\frac{53}{60}$
40≤10a+10<53/-10
30≤10a<43
a=3,4

Answer 2

5) 3x+2<20
3x<18
x<6
$x\in\{0,1,...5\}$
6)
[tex] ^{20)} \frac{2}{3} \leq \ \textless \ ^{10)} \frac{a+1}{6}\ \textless \ \frac{53}{60}\\ 40 \leq \ \textless \ 10a+10\ \textless \ 53|-10\\ 30\leq10a\ \textless \ 43|:10\\ 3 \leq a\ \textless \ 4,3\\ a\in\{3,4\} [/tex]