18 x 123 + 9 x 4567 x 2 + 3 x 5310 x 6
= 18 x 123 + 9 x 2 x 4567 + 3 x 6 x 5310
= 18 x 123 + 18 x 4567 + 18 x 5310
= 18 x ( 123 + 4567 + 5310 )
= 18 x 10000
= 180000
= 2214 + 82206 + 95580
= 84420 + 95580
= 180000
k mình nha
18 X123 + 9X4567x2 +3x5310x6
=18x123+18x4567+18x5310
=18x(123 + 4567 +5310)
=18x 10000
=180000