Question

Tìm y biết: $\left(\frac{10}{21}+\frac{1}{3}\right)-y=\frac{16}{21}$

Answer 1

`(10/21 + 1/3) -y=16/21`

`=> ( 10/21 + 7/21)-y=16/21`

`=> 17/21 -y=16/21`

`=> y= 17/21-16/21`

`=> y=1/21`

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`x/35 =3/35`

`=> x=3`

Answer 2

(\(\dfrac{10}{21}\)+\(\dfrac{1}{3}\))-y=\(\dfrac{16}{21}\)

\(\dfrac{17}{21}\)-y=\(\dfrac{16}{21}\)

y=\(\dfrac{17}{21}\)-\(\dfrac{16}{21}\)

y=\(\dfrac{1}{21}\)