Răspuns:1/2+2(o,25+3)=0,5+0,5+6=7
c)5/2+3**2*0,25=2,5+9*0,25=2,5+2,25=4,75
d)(21/10+1/2):6/5+6/5-0,4=(21/10+5/10):6/5+6/5-0,4=26/10*5/6+6/5-0,4=
26/2*1/6=26/12+6/5-0,4=130/60+72/60=202/60-0,4=3,36-4,04=-0,68
Explicație pas cu pas:
