Question

cum se rezolva 0,24x-3,6=0 ????

Answer 1

0,24x-3,6=0;
0,24x=3,6;
x=3,6/0,24;
x=36/10 : 24/100;
x=18/5 : 12/50;
x=18/5 • 50/12 ->se simplifică 5 cu 50;
x=(18•10)/12;
x=180/12;
x=15;

Answer 2

O varianta ca sa scapam de fractii zecimale
se inmulteste cu 100
24x-360=0
se imparte la 12
2x-30=0
se mai imparte si la 2
x-15=0
se rezolva
x=15


cu fractii ordinare
24x/100-36/10=0
24x/100=36/10
amplificam in stanga cu 10
24x/100=360/100
2 fractii egale cu numitori agali ausi numaratorii egali
24x=360 |impartim prin 12 ambii membri

2x=30
 x=30:2
x=15


sau
 24x/100-36/10=0

12x/50-36/10=0
12x/50-5*36/50=0

(12x-5*36)/50=0

12x-5*36=0
12x=5*36
x=5*36:12
x=5*3
x=15