a) 2/3 (1 +3- 7x/2)=x aducem la acelasi numitor in paranteza
2/3 * (2+6-7x)/2=x
(8-7x)/3=x
8-7x=3x
3x+7x=8
10x=8
x=8/10= 4/5
b)1,(3)=1 intreg 3/9= 1 intreg 1/3= 4/3
0,6=6/10=3/5
(4x/3/2- 9/4) :3/5=x/9
(4x/3*1/2 -9/4):3/5= x/9
(2x/3 -9/4) :3/5 =x/9 aducem la acelasi numitor in paranteza
(8x-27)/12* 5/3=x/9
(40x-135)/36=x/9
360x-1215=36x
360x-36x=1215
324x=1215
x=1215/324
x=3,75
