几道简算题8
1.(362+548×361)/(362×548-186)
2.(1988+1989×1987)/(1988×1989-1)
3.(204+584×1991)/(1992×584―380)―1/143
人气:231 ℃ 时间:2020-03-27 20:45:55
解答
1.(362+548×361)/(362×548-186)= (362+548×361)/(361×548+548-186)= (362+548×361)/(361×548+362)= 12.(1988+1989×1987)/(1988×1989-1)= (1988+1989×1987)/(1987×1989+19...
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