(-157)-|24|+57 = -157 -24 +57
= (-157 +57) -24
= -100 -24
= -124
(987-432)-(-32+987) = 987 -432 +32 -987
= (987 -987) + (-432 +32)
= 0 + (-400)
= -400
3×(-6)+(-4)² - |-2020| = -18 + 16 -2020
= -2 -2020
= -2022
64×2 -94×64 +(-64)×8 = 64×(2 -94 -8)
= 64×(-100)
= -6400