Question

a*b= 7 intreg si 3/11, a*c=3 intregi si 5/22,a*d=4 intregi si 13/33. calculeaza a(b-c=d)

Answer 1

a*b=7 intregi si 3/11=80/11
a*c=3 intregi si 5/22=71/22
a*d=4 intregi si 13/33=145/33
a(b-c+d)=a*b-a*c+a*d=80/11-71/22+145/33=(480-213+290)/66=557/66