Question

X+3<7
X+5<8
199+x<203
X-25<27
32-X>28

Answer 1

x<7-3
x<4, deci x∈{0,1,2,3}
si  asa  pt urmatoarele doua
x<27+25
x<52  deci  x∈{0,1,2,3..........50,51}
32-28>x
4>x deci x∈{0,1,2,3}

Answer 2

$a).x+3\ \textless \ 7 \\ x\ \textless \ 7-3 \\ x\ \textless \ 4 \\ b).x+5\ \textless \ 8 \\ x\ \textless \ 8-5 \\ x\ \textless \ 3 \\ c).199+x\ \textless \ 203 \\ x\ \textless \ 203-199 \\ x\ \textless \ 4 \\ d).x-25\ \textless \ 27 \\ x\ \textless \ 27+25 \\ x\ \textless \ 52$
$e).32-x\ \textgreater \ 28 \\ -x\ \textgreater \ 28-32 \\ -x\ \textgreater \ -4 \\ x\ \textless \ 4$