Toán 16 x 20,21 + 20,21 x14 + 20,21 x 2009 – 20,21 x 2039 10/07/2021 By Madelyn 16 x 20,21 + 20,21 x14 + 20,21 x 2009 – 20,21 x 2039
16 x 20,21 + 20,21 x14 + 20,21 x 2009 – 20,21 x 2039 = (16 + 14 + 2009 – 2039) x 20,21 = 0 x 20,21 = 0 Trả lời
`16xx20,21+20,21xx14+20,21xx2009-20,21xx2039` `=20,21xx(16+14+2009-2039)` `=20,21xx(2039-2039)` `=20,21xx0` `=0` Trả lời
16 x 20,21 + 20,21 x14 + 20,21 x 2009 – 20,21 x 2039
= (16 + 14 + 2009 – 2039) x 20,21
= 0 x 20,21 = 0
`16xx20,21+20,21xx14+20,21xx2009-20,21xx2039`
`=20,21xx(16+14+2009-2039)`
`=20,21xx(2039-2039)`
`=20,21xx0`
`=0`