Question

Tìm y

a) 19/20 - y = 8/5 - 3/4

b) y : 2/3 = 4/9 x 3

Answer 1

a/\(\dfrac{19}{20}-y=\dfrac{8}{5}-\dfrac{3}{4}\)
\(\dfrac{19}{20}-y=\dfrac{17}{20}\)
\(y=\dfrac{19}{20}-\dfrac{17}{20}\)
\(y=\dfrac{2}{20}=\dfrac{1}{10}\)
b/\(y:\dfrac{2}{3}=\dfrac{4}{9}\times3\)
\(y:\dfrac{2}{3}=\dfrac{4}{3}\)
\(y=\dfrac{4}{3}\times\dfrac{2}{3}\)
\(y=\dfrac{8}{9}\)

#データネ

Answer 2

a) 19/20 - y = 8/5 - 3/4

    19/20 - y =   17/20

                y = 17/20 + 19/20

                y =      36/20

b) y : 2/3 = 4/9 x 3

     y : 2/3 = 12/9

          y    =  12/9 x 2/3 

          y    =   24/27

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