Question

Calculati 1,5(6)+0,8(3)-(5 supra 6) la puterea -1÷ 10 la puterea -2.

Answer 1

sper ca e corect, daca am gresit imi zici

Answer 2

1,5(6) + 0,8(3) -(5/6)^-1 : 10^-2 =
1,5(6) = (156 -15)/90 = 141/90 = 47/30
0,8(3) = (83-8)/90 = 75/90 = 25/30
(5/6)^-1 = (1/5/6)^1 = 6/5
10^-2 = (1/10)^2 = 1/100

= 47/30 + 25/30 - 6/5 : 1/100 =
= 72/30 - 6/5 ×100 =
= 72/30 - 600/5 =
= 72/30 - 120 =
= (72 - 30×120)/30 =
= (72-3600)/30 =
= - 3528/30 =
= - 1764/15 =
= - 588/5