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\(\dfrac{1}{2022}\) \(\times\) \(\dfrac{2}{5}\) + \(\dfrac{1}{2022}\) \(\times\) \(\dfrac{7}{5}\) - \(\dfrac{1}{2022}\) \(\times\) \(\dfrac{8}{10}\)
= \(\dfrac{1}{2022}\) \(\times\) ( \(\dfrac{2}{5}\) + \(\dfrac{7}{5}\) - \(\dfrac{8}{10}\))
= \(\dfrac{1}{2022}\) \(\times\) ( \(\dfrac{9}{5}\) - \(\dfrac{4}{5}\))
= \(\dfrac{1}{2022}\) \(\times\) \(\dfrac{5}{5}\)
= \(\dfrac{1}{2022}\times1\)
= \(\dfrac{1}{2022}\)
\(2022\times57+2022\times42+2022=2022\times\left(57+42+1\right)=2022\times\left(57+43\right)=2022\times100=202200.\)
`2022+2022:1/3+2022+2022:1/5`
`=2022+2022xx3+2022+2022xx5`
`=2022xx(1+3+1+5)`
`=2022xx10=20220`
\(\dfrac{12}{5}\times x-\dfrac{2}{5}\times x=2022\\ \left(\dfrac{12}{5}-\dfrac{2}{5}\right)\times x=2022\\ 2\times x=2022\\ x=2022\div2\\ x=1011\)
a: =5*100=500
b: =2022(14-3-1)=20220
sai rùiiii