Question

Determinati x ca find 3,(2)+x<9,(7) in N

Answer 1

3,(2)=3 intregi 2/9 = 29/9
9,(7)=9 intregi 7/9 = 88/9
29/9 + x < 88/9
29+9x<88
9x<88-29
9x<59
x<59/9
x<6,(5)
=>x∈{0,1,2,3,4,5,6}

Answer 2

x<9,(7)-3,(2)
x<(97-9)/9-(32-3)/9
x<(88-29)/9
9x<59
x<59/9         x<6,(5)
x={0,1,2,3,4,5,6}