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ex 8 dau coroana va rog

Ex 8 Dau Coroana Va Rog class=

Răspuns :

6x=5y
x=5y/6
(4x-y)/(2x+3y)=(4×5y/6-y)/[(2×5x/(6+3y)=(10y-3y)/3 ×3/(5y+9y)=7y//14y=1/2
/=supra