求几道数学负数加减法过程及答案
题目:(0.6)+1.7+(0.6)+(-1.7)+(-9)-3-4+19-11+2(-5/12)+1/12+1/5+(-13/15)-(-18)+12-15+(-7)-...
题目:
(0.6)+1.7+(0.6)+(-1.7)+(-9)
-3-4+19-11+2
(-5/12)+1/12+1/5+(-13/15)
-(-18)+12-15+(-7)
-7.5+4.7-(-8.9)+(-6)
-2/3+1/6- 3 又1/2+1
一定要全正确的,谢谢,过程也要详细,解答较好的加分!很急的!!! 展开
(0.6)+1.7+(0.6)+(-1.7)+(-9)
-3-4+19-11+2
(-5/12)+1/12+1/5+(-13/15)
-(-18)+12-15+(-7)
-7.5+4.7-(-8.9)+(-6)
-2/3+1/6- 3 又1/2+1
一定要全正确的,谢谢,过程也要详细,解答较好的加分!很急的!!! 展开
3个回答
展开全部
1、解:
(0.6)+1.7+(0.6)+(-1.7)+(-9)
=0.6+0.6+1.7-1.7-9
=1.2-9
=-7.8
2、解:
-3-4+19-11+2
=-7+19-11+2
=12-11+2
=1+2
=3
3、解:
(-5/12)+1/12+1/5+(-13/15)
=-4/12-13/15+1/5
=-5/15-13/15+3/15
=-1
4、解:
-(-18)+12-15+(-7)
=18+12-15-7
=30-15-7
=15-7
=8
5、解:
-7.5+4.7-(-8.9)+(-6)
=-2.8+8.9-6
=6.1-6
=0.1
6、解:
-2/3+1/6- 3 又1/2+1
=-4/6+1/6-7/2+1
=-1/2-7/2+1
=-4+1
=3
【绝对正确 谢谢采纳】
(0.6)+1.7+(0.6)+(-1.7)+(-9)
=0.6+0.6+1.7-1.7-9
=1.2-9
=-7.8
2、解:
-3-4+19-11+2
=-7+19-11+2
=12-11+2
=1+2
=3
3、解:
(-5/12)+1/12+1/5+(-13/15)
=-4/12-13/15+1/5
=-5/15-13/15+3/15
=-1
4、解:
-(-18)+12-15+(-7)
=18+12-15-7
=30-15-7
=15-7
=8
5、解:
-7.5+4.7-(-8.9)+(-6)
=-2.8+8.9-6
=6.1-6
=0.1
6、解:
-2/3+1/6- 3 又1/2+1
=-4/6+1/6-7/2+1
=-1/2-7/2+1
=-4+1
=3
【绝对正确 谢谢采纳】
展开全部
(0.6)+1.7+(0.6)+(-1.7)+(-9)=-7.8(计算题不要过程吧)
-3-4+19-11+2=3
(-5/12)+1/12+1/5+(-13/15)=-1
-(-18)+12-15+(-7)=8
-7.5+4.7-(-8.9)+(-6)=0.1
-2/3+1/6- 3 又1/2+1=-3
权计算器算的 绝对准确
-3-4+19-11+2=3
(-5/12)+1/12+1/5+(-13/15)=-1
-(-18)+12-15+(-7)=8
-7.5+4.7-(-8.9)+(-6)=0.1
-2/3+1/6- 3 又1/2+1=-3
权计算器算的 绝对准确
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展开全部
0.6+1.7+0.6-1.7-9
=0.6+0.6+(1.7-1.7)-9
=1.2-9
= -7.8
-3-4-11+2+19
=-18+21
=21-18
=3
-5/12-13/15+1/12+1/5
=-1/3+1/5-13/15
=-1/3-10/15
=-1/3-2/3
=-1
18+12-15-7
=30-22
=8
-7.5-8.9-6+4.7
=4.7-22.4
=-17.7
-2/3-7/2+1/6+1
=-4/6-21/6+1/6+1
=7/6-25/6
=-18/6
=-3
主要是负的先加在一起,正的加在一起,然后正的减负的
=0.6+0.6+(1.7-1.7)-9
=1.2-9
= -7.8
-3-4-11+2+19
=-18+21
=21-18
=3
-5/12-13/15+1/12+1/5
=-1/3+1/5-13/15
=-1/3-10/15
=-1/3-2/3
=-1
18+12-15-7
=30-22
=8
-7.5-8.9-6+4.7
=4.7-22.4
=-17.7
-2/3-7/2+1/6+1
=-4/6-21/6+1/6+1
=7/6-25/6
=-18/6
=-3
主要是负的先加在一起,正的加在一起,然后正的减负的
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