145.99+143.101-143+145
=145.(99+1)+143.(101-1)
=145.100+143.100
=100.(145+143)
=100.288
=28800
HT
TL
= 28800
nhaaaaaaa
HT
2850
HT nhé
\(145\cdot99+143\cdot101-143+145\)
\(=145\cdot\left(99+1\right)+143\cdot\left(101-1\right)\)
\(=145\cdot100+143\cdot100=\left(145+143\right)\cdot100=28800\)
145 x 99 + 143 x 101 - 143 + 145 = 28800
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ko = 28510 nha
:1