Question

Efectuati:a)2+1/3;b)3+5/4;c)2 si 1/2+1 si 1/3;d)5 si 1/4+1 si 1/2;e)3 si 1/3+1;f)2 si 1/7+1 si 1/2;g)2 si 1/4+3 si 1/3;h)5 si 1/2+2 si 1/7;i)1 si 1/20+2 si 1/12.va rog frumos sa-mi raspundeti la toate.

Answer 1

a 2+1\3=6+1totulpe 3=7/3
3+5/4=12+5 toul pe4=17/4
2si1/2+1=5/2+1=5+2 totul pe2=7/2
5si1/4+1=21/4+1=21+4 totul pe 4=25/4
3 si1/3+1=10/3+1=10+3 totul pe 3=13/3
2si1/7+1 si 1/2=15/7+3/2=30+21 totul pe14=51/14
2 si1/4+3si1/3=9/4+10/3=27+40totul pe12=67/12
5si1/2+2si1/7=11/2+15/7=77+30totulpe14=107/14
1si1/20+2si1/2=21/20+5/2=21+50 totul pe20=71/20