\(28+\left(19-28\right)-\left(32-57\right)\)
\(=28+19-28-32+57\)
\(=57+19-32\)
=76-32
=44
28+(19-28)-(32-57)
= (28 - 28) + (57 - 32) + 19
= 0 + 25 + 19 =44
28+(19−28)−(32−57)28+(19−28)−(32−57)
=28+19−28−32+57=28+19−28−32+57
=57+19−32=57+19−32
=76-32
=44