(1)0.4-(-4/1)+6/1(2)3/1-(-6/5)+3/2(3)3/1+(-5/1)+1+3/2(4)27-18+(-7)-32(5)0.5+(-4/1)-(2.75)+2/1(6)33.1-(-22.9)+(-10.5)(7)(-8)-(-15)+(-9)-(-12)(8)-3/2+(-6/1)-(-4/1)-2/1(9)5/3-2/3+(-4/11)+4/13

问题描述:

(1)0.4-(-4/1)+6/1(2)3/1-(-6/5)+3/2(3)3/1+(-5/1)+1+3/2(4)27-18+(-7)-32
(5)0.5+(-4/1)-(2.75)+2/1(6)33.1-(-22.9)+(-10.5)(7)(-8)-(-15)+(-9)-(-12)(8)-3/2+(-6/1)-(-4/1)-2/1(9)5/3-2/3+(-4/11)+4/13

题目里面的算式答案是156.1
内容里面的是9709363/8580

(1)0.4-(-4/1)+6/1
=0.4+4/1+6/1
=5/2+12/3+12/2
=5/2+12/5
=60/24+60/25
=60/49
(2)3/1-(-6/5)+3/2
=3/1+6/5+3/2
=6/2+6/5+6/4
=6/11
(3)3/1+(-5/1)+1+3/2
=6/1-5/1+1+3/2
=30/5-30/6+30/30+30/20
=30/49
(4)27-18+(-7)-32
=27-18-7-32
=9-7-32
=2-32
=-30
(5)0.5+(-4/1)-(2.75)+2/1
=0.5-4/1-2.75+2/1
=0.5-0.25-2.75+0.5
=(0.5+0.5)-(0.25+2.75)
=1-3
=-2
(6)33.1-(-22.9)+(-10.5)
=33.1+22.9-10.5
=56-10.5
=45.5
(7)(-8)-(-15)+(-9)-(-12)
=-8+15-9+12
=7-9+12
=-2+12
=10
(8)-3/2+(-6/1)-(-4/1)-2/1
=-3/2-6/1+4/1-2/1
=-12/8-12/2+12/3-12/6
=12/(-8-2+3-6)
=-12/13
(9)5/3-2/3+(-4/11)+4/13
=5/3-2/3-4/11+4/13
=5/3-2/3-(4/11-4/13)
=5/3-2/3-4/2
=5/3-(2/3+2/1)
=5/3-2
=5/3-5/10
=-5/7

(1)0.4-(-4/1)+6/1=0.4+1/4+1/6=24/60+15/60+10/60=49/60 (六十分之四十九)(2)3/1-(-6/5)+3/2=1/3+5/6+2/3=2/6+5/6+4/6=11/6(六分之十一)(3)3/1+(-5/1)+1+3/2=1/3-1/5+1+2/3=5/15-3/15+15/15+10/15=2...