\(20,21\times35,75+20,21\times62,25+40,42\\ =20,21\times35,75+20,21\times62,25+20,21\times2\\ =20,21\times\left(35,75+62,25+2\right)\\ =20,21\times100\\ =2021\)
\(20,21\times35,75+20,21\times62,25+40,42\)
\(=20,21\times\left(35,75+62,25\right)+20,21\times2\)
\(=20,21\times\left(98+2\right)\)
\(=20,21\times100=2021\)
`20,21 xx 35,75 + 20,21 xx 62,25 + 40,42`
`= 20,21 xx 35,75 + 20,21xx62,25+20,21xx2`
`=20,21xx(35,75+62,25+2)`
`=20,21xx100`
`=2021`
20,21 x 35,75 + 20,21 x 62,25 + 40,42
= 20,21 x 35,75 + 20,21 x 62,25 + 20,21 x 2
= 20,21 x (35,75 + 62,25 + 2)
= 20,21 x 100
= 2021
