(-3/4)*(8-1又1/3-0.04+3又1/5)

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(-3/4)*(8-1又1/3-0.04+3又1/5)(-3/4)*(8-1又1/3-0.04+3又1/5)(-3/4)*(8-1又1/3-0.04+3又1/5)=(-3/4)(8-4/3-1/25+

(-3/4)*(8-1又1/3-0.04+3又1/5)
(-3/4)*(8-1又1/3-0.04+3又1/5)

(-3/4)*(8-1又1/3-0.04+3又1/5)
=(-3/4)(8-4/3-1/25+16/5)=-6+1+(-3/4)(-1/25+16/5)=-5-(3/4)×(79/25)=-5-237/100=-5.237