Đáp án:
Giải thích các bước giải:
a) ( 59 - 148 ) + 148
= 59 - 148 + 148
= 55 - ( 148 - 148 )
= 55 - 0
= 55
b) ( -2019 ) - ( 332 - 2019 )
= -2019 - 332 + 2019
= ( -2019 + 2019 ) - 332
= 0 - 332
= -332
c) ( 88 - 117 ) + ( 117 - 288 )
= 88 - 117 + 117 - 288
= ( 88 - 288 ) - ( 177 - 177 )
= -200 - 0
= -200
d) ( 39 - 87 + 40 ) - ( 39 -60 -87 )
= 39 - 87 + 40 - 39 + 60 + 87
= ( 39 - 39 ) - ( 87 - 87 ) + 40
= 0 - 0 + 40
= 40
e) ( -2020 ) + ( 246 + 2020 )
=-2020 + 246 + 2020
= ( -2020 + 2020 ) + 246
= 0 + 246
= 246
g) 1416 - ( -19 + 1416 )
= 1416 + 19 - 1416
= ( 1416 - 1416 ) + 19
= 0 + 19
= 19
h) ( -278 ) + ( -56 + 278 - 44 )
= -278 + ( -56 ) + 278 -44
= ( -278 + 278 ) + ( -56 - 44 )
= 0 + ( -100 )
= -100