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EXERCITIUL 9 DOAR PUNCTELE e SI i

EXERCITIUL 9 DOAR PUNCTELE E SI I class=

Răspuns :

e)(17/6-4/3):(x+1)=5/2
(17-8)/6:(x+1)=5/2
x+1=9/6:5/2
x+1=9/6x2/5
x+1=3/5
x=3/5-1
x=(-2/5)

i)3(x-3)/2+1/6=13x/6-3
9x-9+1=13x-18
9x-13x=9-1-18
-4x=-26
x=26/4=13/2