Trl :
107 x 112 - 14 x 56
= 107 x 2 x 56 - 14 x 56
= 214 x 56 - 14 x 56
= ( 214 - 14 ) x 56
= 200 x 56
= 11200
Hok tốt
107 x 112 - 14 x 56
= 107 x 2 x 56 - 14 x 56
= 214 x 56 - 14 x 56
= ( 214 - 14 ) x 56
= 200 x 56
= 11200
#ParkJimin
\(=107\cdot112-7.2.56\)
\(=107.112-7.112\)
\(=112.\left(107-7\right)\)
\(=112.100\)
\(=11200\)