Question

5,2+5,(2)-5,02-5,0(2) va rog mult cu tot cu rezolvare​

Answer 1

Răspuns:

= 19/50 = 0,38

Explicație pas cu pas:

5,2+5,(2)-5,02-5,0(2) = ?

5,2+5,(2)-5,02-5,0(2) =

= 52/10 + (52-5)/9 - 502/100 - (502-50)/90 =

= ¹⁰⁾52/10 + ¹⁰⁾47/9 - 502/100 - 452/90 =

= 520/100 - 502/100 + 470/90 - 452/90 =

= (520-502)/100 + (470-452)/90 =

= ⁹⁾18/100 + ¹⁰⁾18/90 = 162/900 + 180/900 =

= (162+180)/900 = 342/900⁽² =  171/450⁽³ = 57/150⁽³=

= 19/50 = 0,38