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va rog repede dau coroana

Va Rog Repede Dau Coroana class=

Răspuns :

Răspuns:

Explicație pas cu pas:

a)2/5+3/10=(2·2+3)/10=7/10

b)2/9+2/3=(2+2·3)/9=8/9

c)3/4+5/8==(3·2+5)/8=11/8

d)7/8+1/2=(7+4)/8=11/8

e)1/2+1/4=(2+1)/4=3/4

f) 3/10+2/5=(3+2·2)/10=7/10

g) 1/6+2/3=(1+2·2)/6=5/6

h) 3/5+1/20=(3·4+1)/20=13/20