Question

Efectuati :
a). 2 1/4+3 1/3=
b). 5 1/2+2 1/7=
c). 1 1/20+2 1/12=

Answer 1

A) 2 1/4=2x4+1=9/4 3 1/3=3x3+1=10/3 9/4 + 10/3=(9/4 il amplificam cu 3 si 10/3 in amplificam cu 4) =27/12 + 40/12 =67/12 B)5 1/2 + 2 1/7 5 1/2 =5x2 +1= 11/2 2 1/7=2x7+1=15/7 11/2 + 15/7=(11/2 amplificam cu 7 si 15/7 amplificam cu 2) 77/14 + 30/14= =107/14 C)11/20+ 2 1/12= 2 1/12=2x12+1=25/12 11/20+25/12=(11/20 amplificam cu 12 si 25/12 cu 20) 132/240+500/240=632/240