Răspunsuri

2014-05-05T21:27:50+03:00
A)1/20+0,75= 1/20+75/100= aducem la acelasi numitor=5/100+75/100=80/100=se simplifica pana devine o fractie ireductibila=40/50=20/25=4/5 =0,8
b)7/50x0,25=7/50x25/100=se simplifica 25 cu 5o si ramane=7/2x1/100=7/200=0,035
1 5 1