数学问题噢.!帮莪解答///哪位GGMM帮莪解答数学问题唉.!~~要列式噢,.!下面的问题中,有‘-7/3’类似的东东.
3个回答
(1)1+7/1-(-7/3)
=8+7/3
=10又1/3
(2)2/1+(-3/2)-(5/4)+(-2/1)
=2-1.5-1.25-2
=0.5-3.25
=-2.75
(3)-3/1+2/1+4/1
=-3+2+4
=3
(4)2/1+(-3/2)-(-5/4)+(-2/1)
=2-1.5+1.25-2
=1.75-2
=-0.25
(5)-2.5+(-5/1)
=-2.5-5
=-7.5
(6)0.4-(-4/1)+6/1
=0.4+4+6
=10.4
(7) 27-18+(-7)-32
=27-18-7-32
=-84
(8) 2/1-(-6/5)+3/2
=3+1.2+1.5
=5.7
(9) 3/1+(-5/1)+1+3/2
=3-5+1+1.5
=0.5
(10)0.5+(-4/1)-(-2.75)+2/1
=0.5-4+2.75+2
=1.25
(11)33.1-(-22.9)+(-10.5)
=33.1+22.9-10.5
=56-10.5
=45.5
(12)(-8)-(-15)+(-9)-(-12)
=-8+15-9+12
=10
(13)-3/2+(-6/1)-(-4/1)-2/1
=-1.5-6+4-2
=-5.5
(14)5/3-2/3+(-4/11)+4/13
=1-4/11+4/13
=135/143
