Răspuns :
x-nr.elevilor din clasa
pleaca in excursie 3x/4
x-3x/4=8 aducem la acelasi numitor
(4x-3x)/4=8
x/4=8
x=4·8
x=32 elevi au fost in clasa
pleaca in excursie 3x/4
x-3x/4=8 aducem la acelasi numitor
(4x-3x)/4=8
x/4=8
x=4·8
x=32 elevi au fost in clasa
4/4sau 1 intreg----- elevii clasei(4/4=3/4+1/4)
3/4----pleaca in ex.
1/4----8 elevi ce au ramas;
daca 1/4=8,atunci 3/4=8x3=24 elevi
4/4=8+24=32elevi
R:32el.
3/4----pleaca in ex.
1/4----8 elevi ce au ramas;
daca 1/4=8,atunci 3/4=8x3=24 elevi
4/4=8+24=32elevi
R:32el.