(-3.75)+2.85+(-1又4/1)+(-2/1)+3.5+(-2.5)我算不出来了,

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(-3.75)+2.85+(-1又4/1)+(-2/1)+3.5+(-2.5)我算不出来了,(-3.75)+2.85+(-1又4/1)+(-2/1)+3.5+(-2.5)我算不出来了,(-3.75)+

(-3.75)+2.85+(-1又4/1)+(-2/1)+3.5+(-2.5)我算不出来了,
(-3.75)+2.85+(-1又4/1)+(-2/1)+3.5+(-2.5)
我算不出来了,

(-3.75)+2.85+(-1又4/1)+(-2/1)+3.5+(-2.5)我算不出来了,
原式=(-3.75)+2.85+(-1又1/4)+(-1/2)+3.5+(-2.5)
=-3.75+2.85-1.25-0.5+3.5-2.5
=(2.85+3.5)-(3.75+1.25+0.5+2.5)
=6.35-8
=-(8-6.35)
=-1.65

-3.15