Răspunsuri

2014-10-12T17:48:54+03:00

a x b +a x c= a x (b+c) =48
i ) a x (b +c) :16 = 48:16 =3

ax b - a xc =a x(b-c )=12
ii) a x (b-c ) :4 = 12 :4 = 3
2 3 2