2017*4+2017*62+2017*35-2017
=2017*(4+62+35-1)
=2017*100
=201700
2006*42+2006*39+2006*21-2006*2
=2006*(42+39+21-2)
=2006*100
=200600
k mik đi
a) 2017*4+2017*62+2017*35-2017
=2017*(4+62+35)-2017*1
=2017*(101-1)
=2017*100
=201700
b)2006*42+2006*39+2006*21-2006*2
=2006*(42+39+21-2)
=2006*100
=200600
a)2017 * 4 + 2017 * 62 + 2017 * 35 -2017
=2017*( 4 + 62 + 35 - 1)
=2017 * 100
=201700
b) 2006 * 42 + 2006 * 39 +2006 * 21 -2016 *2
=2016 * (42 + 39 + 21 - 2)
=2016 * 100
=201600
a) 2017 x 4 + 2017 x 62 + 2017 x 35 - 2017
= 2017 x ( 4 + 62 + 35 - 1 )
= 2017 x 100 = 201700
b) 2006 x 42 + 2006 x 39 + 2006 x 21 - 2006 x 2
= 2006 x ( 42 + 39 + 21 - 2 )
= 2006 x 100 = 200600
a,2017 x ( 4 + 62 +35 -1)
= 2017 x 100
= 201700
a, 2017*(4+62+35-1)=2017*100=201700
b, 2006*(42+39+21-2)=2006*100=200600
k mình nhé!!!
