ajutor te roggggggggggggggg. numai(b,f)

Răspuns:
b)2,8-5,5=28/10-55/10=-27/10=-2,7
f)-1/4+2/5=(-5+8)/20=3/20
Răspuns:
b) 2,8-5,5 = -(5,5-2,8) = -2,7
f) -1/4+2/5 = (-5+8)/20 = 3/20
EVERGREEN