Question

daca elevi unei scoli sunt grupati cate 5 sau 4 raman 3 elevi respectiv 2 elevi
a​

Answer 1

Notam n=numarul elevilor

n:5=a rest 3

n:4=b rest 2

---------------

==> n=5*a+3

==> n=4*b+2

5a+3=4b+2

----------------- -2

5a+1=4b

Answer 2

Răspuns:

x=nr de elevi

x:5=c1 r4

x:3=c2 r 2

x=5×c1+4|+1

x=3×c2+2|

x+1=5×c1+5=>x+1=5(c1+1)|

x+1=3×c2+3=>x+1=3(c2+1)|=> x+1= [3,5]

x+1=3×5

x+1=15

x=14