Răspunsuri

2014-02-16T10:30:09+02:00
X+5/7x=4800
x(1+5/7)=4800
x12/7=4800
x=(4800 7)/12=2800
x=2800

2014-02-16T10:40:33+02:00
 unu are 2800 si celalalt 2000,am facut prin segmente 7 sge la unu si 5 la unu le-am adunat si impartit la cate erau am aflat cat are al doilea si am facut 5/7 sin cat avea el