Question

负四又三分之二加八分之三加负六分之五加负八分之五加三又四分之三等于几

Answer 1

原式=(-4又2/3)+3/8+(-5/6)+(-5/8)+3又3/4

=[ (-4又2/3) +(-5/6) ] +[ 3/8+(-5/8) ] +3又3/4

=[ -(4又2/3 +5/6 ) ] +[ -(5/8-3/8) ] +3又3/4

=(-5又1/2 ) +(-1/4) +3又3/4

=(-5又1/2)+(3又3/4-1/4)

=(-5又1/2)+3又1/2

=-(5又1/2-3又1/2)

=-2