Răspunsuri

2014-11-11T15:05:18+02:00
A)x+15<27
x<27-15
x<12

b) x-7<15
x<15+7
x<22

11+x<18
x<18-11
x<7

x-30<3
x<3+30
x<33

20+x<101
x<101-20
x<81

x-15<10
x<10+15
x<25
1 5 1