答:
图
〔175-(48+36)〕x12=〔175-84〕x12=〔175-85+1〕x12=〔90+1〕x12=90×12+1x12=1080+12=1092
〔175-(48+36)〕x12=(175-84)x12=91x12=(90+1)x12=90x12+12=1080+12=1092