(145x99+145)-(143x102-143)
=145x100-143x101
=14500-14443
=57
\(\left(145x99+145\right)-\left(143x102-143\right)\)
\(=145x100-143x101\)
\(=14500-14443\)
\(=57\)
(145.99+145)-(143.102-143)
=145.100-143.101
=14500-14443
=57
hok tốt
(145x99+145)-(143x102-143)
=(145x99+145x1)-(143x102-143x1)
=[145x(99+1)]-[143x(102-1)]
=145x100-143x101
=14500-14443
=57