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18. Se dau relatiile
m+n=196 n+p=422 m+p=378

Compara m n p


Răspuns :

2m+2n+2p=196+422+378
2m+2n+2p=996 | ÷2
m+n+p=498
p=498-196=302
m=498-422=76
n=498-378=120
m<n<p