Question

Rezolvati exercițiul de mai jos

Va rog frumos sa ma ajutați

Answer 1

-7/10×5/14+4/21×7/10-7/10×6/35=
-1/4+2/15-3/25 =(-75+40-36)/300= -71/300

Answer 2

-(3,5/14)+(2,8/21)-(4,2/35), numitor comun 210

(-3,5*15+2,8*10-4.2*6)/210=(-52,5+28-25,2)/210=-49,7/210=-7,1/30