61/4-3.3-(-6)-(-33/4)+4+3.3= 0-212/3+31/4-(-2/3)-(+1/4)=
问题描述:
61/4-3.3-(-6)-(-33/4)+4+3.3= 0-212/3+31/4-(-2/3)-(+1/4)=
答
61/4-3.3-(-6)-(-33/4)+4+3.3
=(61/4+33/4)+(3.3-3.3)+(6+4)
=47/2+0+10
=67/2
0-212/3+31/4-(-2/3)-(+1/4)
=(31/4-1/4)+(2/3-212/3)
=15/2-70
=-125/2
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