Question

Fie a,b,c inclus in R, c=taiat 3 , astfel incat a+b+2c=4 si 3a-2b+c=7. Aratati ca:
a) 4a-b+3c=11
b) 11a-4b+7c =29
c) a+c=3
D) a-b=2
e) a+b+2c/2a-3b-c=4/3
f) 5a+12b+ 8c/17a-3b+2c-12 = 3/4
Va roog mult !!

Answer 1

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