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cu cat este egal:
1pe6 +3pe8=
7pe20-1pe10=
5pe4ori3pe4=
6pe8:2=


Răspuns :

aducem la acelasi numitor pt fiecare caz si simplificam unde e cazul

1) 1/6 + 3/8= 4/24 + 12/24= 16/24 = 4/6= 2/3

2)7/20 -1/10= 7/20 -2/20 = 5/20 =1/4

3)5/4  * 3/4= 15/16

4)6/8 :2=  6/8  *1/2=  3/8