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Ajutatima sa rezolv aceste exercitii dar tot cu rezolvare va roog dau coroanaa!!!!!!
1]4x/12=4/8
2] 4/8=3/2x
3] 2x/4=8/10
4] 3x/9=4/3
5] 7/9=8/2x

Răspuns :

Ignatovvlad201
1) 4x/12=4/8, x/3=1/2, 2x=3, x=3/2, x=1.5 
     ver; 4*1.5/12=4/8, 1.5/3=1/2, 15/10/3=1/2, 15/10*3/=1/2,5/10=1/2, 1/2=1/2
2) 4/8=3/2x,1/2=3/2x, 2x=6, x=3
3) 2x/4=8/10, x/2=4/5, 5x=8, x=8/5, x=1.6
4) 3x/9=4/3,  x/3=4/3, x=4
5) 7/9=8/2x, 7/9=4/x, 7x=36, x=36/7.

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