Question

-4,5+1,(6)+(-1,25)+21supra6,:D)-9supra5+(-1,75)+1din1supra4+(-7supra6) pls am nevoie de el pana la 12:00!!

Answer 1

-4,5 + (16 - 1)/9 - 1,25 + 21/6 = -5,75 + 15/9 + 21/6 = -5,75 + 5/3 + 21/6 =
-5,75 + 10/6 + 21/6 = - 575/100 + 31/6 = - 23/4 + 31/6 = (-23×6 + 31×4)/24 =
= (-138 + 124)/24 = - 14/24 = - 7/6 = -0,58(3)

9/5 - 175/100 + 1/4 - 7/6 = 9/5 - 7/4 + 1/4 - 7/6 = 9/5 -6/4 - 7/6 = 9/5 - 3/2 - 7/6 =
= (9×6 - 3×15 -7×5)/30 = (9 - 35)/30 = -26/30 = -13/15 = - 0,8(6)
daca am inteles bine
1din1supra4....