efectueaza: 35:5-24:8= 25:5+45:5= 24:3+32:4= 12:4+30:5= 5×10+4×8= 4×6+5×6= 40:5+45:9= 36:4+20:4= 81-(16:4+34)= 100-(50:5+64)= 45-(32:8+16)= 73-(24:6+39)=​