Question

va rog ajutati-ma
cl.8

Answer 1

Răspuns:

a)1/2 + 1/3 + 1/6 =

(6+4+2)/12 = 1

b)1/12 - 1/4 + 1/3 =

(1-3+4)/12 = 2/12 = 1/6 = 6^(-1)

c)(3/2)^2 + 3/8 =

9/4 + 3/8 =

(18+3)/8 = 21/8

d)3/2 - 25 =

(3-50)/2 = (-47/2)