Răspuns:
Explicație pas cu pas:
a)x+3.4 <7.3 ⇔x<7,3-3,4 ⇔x<3,9 deci x∈{0,1,2,3}
b) 27.3-x>17.01 ⇔ -x > 17,01-27,3 ⇔-x > -10,29 |·(-1) ⇔x<10,29 deci x∈{0,1,2,3,4,5,6,7,8,9,10}
c) x-1.2 <4.5 ⇔x<4,5+1,2 ⇔x<5,7 deci x∈0,1,2,3,4,5}
d) x·0.2 <4 ⇔ x<4:0,2 ⇔ x<20 deci x∈{0,1,2,3,4,5,6m7,8,9,10,11,12,13,14,15,16,17,18,19}.
