Question

(62 supra 9 - 55 supra 12)-(85 supra 18-89 supra 24)=?????​

Answer 1

Răspuns:

1 7/24

Explicație pas cu pas:

62/9 - 55/12 - 85/18 + 89/24 =

124-85 / 18 + -110+89 / 24 = (aici ai suma de doua fractii, a nu se intelege altceva!)

39/18 - 21/24 =

13/6 - 7/8 =

13x4 - 7x3 / 24 =

52-21 / 24 =

31/24 =

1 7/24.

Answer 2

$\it \Big(\dfrac{62}{9}-\dfrac{55}{12}\Big)-\Big(\dfrac{85}{18}-\dfrac{89}{24}\Big)=\dfrac{^{8)}62}{\ 9}-\dfrac{^{6)}55}{\ 12}-\dfrac{^{4)}85}{\ 18}+\dfrac{^{3)}89}{\ 24}=\dfrac{496-330-340+267}{72}=\\ \\ \\ =\dfrac{\ 93^{(3}}{72}=\dfrac{31}{24}$