Question

Calculeaza si scrie rezultatul sub forma de numar zecimal:


A= 1/4+1/2+1/3
B=1+1/2+1/4
C=2/3+1/15+4/30

Answer 1

A=0.25+0.5+0.(3)=1.05(3)

B=1+0,5+0,25=1.75

C=0.(6)+0.0(6)+0.1(3)=0.8(6)

Answer 2

Explicație pas cu pas:

A = 1/4 + 1/2 + 1/3

A = 3/12 + 6/12 + 4/12

A = 13/12 = 1,08(3)

B = 1 + 1/2 + 1/4

B = 4/4 + 2/4 + 1/4

B = 7/4 = 1,75

C = 2/3 + 1/15 + 4/30

C = 20/30 + 2/30 + 4/30

C = 26/30 = 13/15 = 0,8(6)