Răspunsuri

2014-05-20T15:36:03+03:00


a+b=49

a:b=6

a=bX6

bX6+b=49

6b+b=49

7b=49

b=49:7

b=7

a+7=49

a=49-7

a=42

Succes

2014-05-20T15:40:44+03:00

a+b=49               1+1=2(seg.egale)

a:b=6                   49-7=42              

a_______+7             42:2=21(b)

b________              21+7=28(a)

Verificare: 28+21=49