Question

URGEENTT!a)Sa se determine x din proportia 2x-1 supra 3=x+1 supra 2 .si b)Daca x supra y =0,(3),calculati 5x+4y supra 9x+6y!Dau coroana .Apasati pe imagine ca sa se vada mai bine.Multumesc:)

Answer 1

$2. \frac{x}{y} =\frac{1}{3} \Leftrightarrow~y=3x\\ \\ Inlocuiesti~in~raport:\\ \\ \frac{5x+12x}{9x+18x} =\frac{17x}{27x} =\frac{17}{27} \\ \\ 1.\frac{2x-1}{3}=\frac{x+1}{2} \Leftrightarrow~4x-2=3x+3~\Leftrightarrow~x=5$