Respuesta :

bkartch
2h/3-1/4=1/3
2h/3=7/12
2h=7/4
h=7/8
(2h/3)-1/4=1/3

(2h/3)=1/3+1/4

(2h/3)=4/12+3/12

(2h/3)=7/12

2h=21/12

h=(21/12)/(2/1)

h=(21/12)*(1/2)

h=21/24

h=7/8