143 + 187 + 209
= 100 + 43 + 100 + 87 + 100 + 100 + 9
= 100 x 4 + ( 43 + 87 + 9 )
= 100 x 4 + 139
\(143+187+209\)
\(=11x13+11x17+11.19\)
\(=11.\left(13+17+19\right)\)
\(=11.49\)
143 + 187 + 209
= 11 x 13 + 17 x 11 + 11 x 19
= 11 x ( 13 + 17 + 19 )
= 11 x 49
143+187+209
=100+43+100+87+100+100+9
=100x4+(43+87+9)
=400+139
=539
chúc bn học tốt ! kb vs mk nhé
Trả lời :
143 + 187 + 209
= 11 x 13 + 17 x 11 + 11 x 19
= 11 x ( 13 + 17 + 19 )
= 11 x 49
= ...
Học tốt nha bạn
\(143+187+209\)
\(=11\times14+11\times17+11\times19\)
\(=11\times\left(14+17+19\right)\)
\(=11\times50\)
143 + 187 + 209
= 11 x 13 + 17 x 11 + 19 x 11
= 11 x ( 13 + 17 + 19)
= 11 x 49
143+187+209
=11x13+11x17+11x19
=11x[13+17+19]
=11x49
=539