Răspuns:
[tex]x9 \times (1.9)[/tex]
Explicație pas cu pas:
a) [(3,15+4.05)·36,9]:[(17,5-10,3):0,41]=(7,2·36,9):(7,2:0,41)=265,68:17,560976=15,129
b) [(3,16-1,15-0,1²):0,5²+0,02:0,01]:2,5=
[(3,16-1,150,01):0,25+0,02:0,01]:2,5= (2:0,25+2):2,5=
(8+2):2,5=10:2,5=4
