Question

Efetue, simplificando quando A) possível 1/2+1/3+1/4= B) 3/2+1/6+2/3 c) 2 1/2+ 3 1/4= D 1 + 5/6+7/8=

Answer 1

a)1/2+1/3+1/4=6/12+4/12+3/12=(6+4+3)/12=13/12

b)3/2+1/6+2/3=9/6+1/6+4/6= (9+1+4)/6= 14/6 =7/3

c)2 1/2+3 1/4= 5/2+13/4=10/4+13/4=23/4

d)1+5/6+7/8= 48+40/48+42/48= (48+40+42)/48 = 130/48= 65/24