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=13*2/5+7*3/5-(55*1/6+4*5/6)+11.702=21-60+11.702=-27.298
=-(29.8+2.2)+(-17.5+7.5+16.5)=-32+6.5=-25.5
=4*2/3-3*2/3)+8.6-7/5-2*3/5=1+8*3/5-2*3/5-1*2/5=1+6-1.4=7-1.4=5.6
=1-3*1/2+2*1/3-(5*1/3-1+3/4)=1-3*1/2+2*1/3-5*1/3+1-3/4=-2*1/2-3+1-3/4=-4*1/2-3/4=-3*6/4-3/4=-3*3/4
=-(29.8+2.2)+(-17.5+7.5+16.5)=-32+6.5=-25.5
=4*2/3-3*2/3)+8.6-7/5-2*3/5=1+8*3/5-2*3/5-1*2/5=1+6-1.4=7-1.4=5.6
=1-3*1/2+2*1/3-(5*1/3-1+3/4)=1-3*1/2+2*1/3-5*1/3+1-3/4=-2*1/2-3+1-3/4=-4*1/2-3/4=-3*6/4-3/4=-3*3/4
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