答:简算过程如下:
1、提取原式:27➕(18➖122)✖️7
2、计算过程:
=27 - 104 x 7
=27 - ( 100 x 7+4 x 7 )
=27 - ( 700+28 )
=27-728
=-701
3、【计算结果】 -701
27+(18-122)×7
= 28 -1 + (18-122)×7
= (4+18-122)×7 - 1
= 100×7 - 1
= 700 -1
= 699
27+(18一122)x7
=4x7一1+(18一122)x7
=(4+18一122)ⅹ7一1
=(一100)ⅹ7一1
=一700一1
=一701。