Question

Efectuați
a)1/2+3/4+1/5=
b)1/2+4/5-7/10=
c)2/3+5/9+7/18=
d)1/12+5/24+7/48=
e)7/65+9/13-4/5-5/26=
f)80/121-1/22+1/55-8/1210=
g)17/63+8/9-3/7-7/21=
h)7/36+5/18-1/4+1/8=
i)27/15-7/125-1/25+21/375=
j)1/2-1/3+1/4-1/5+1/6-1/7=
k)1/2+1/2 la puterea 2 (numitorul la puterea 2)+1/2 puterea 3+1/2 puterea 4+1/2 La puterea 5=
l)1/15+2/15+3/15+....+9/15

Answer 1

a)1/2+3/4+1/5 - prima fracție amplificam cu 10
a doua cu 5
a treia cu 4 =
4/20+12/20+4/30=20/20=1