简便运算、定义新运算。急呀
答案:6 悬赏:50 手机版
解决时间 2021-01-31 05:02
- 提问者网友:风月客
- 2021-01-30 18:19
简便运算、定义新运算。急呀
最佳答案
- 五星知识达人网友:妄饮晩冬酒
- 2021-01-30 19:55
1、6083应该为6.83
7.48+3.17-(2.48-6.83)
=7.48-2.48+3.17+6.83
=5+10
=15
2、8.75-0.35+(1.25-6.65)
=8.75+1.25-(0.35+6.65)
=10-7
=3
3、7.6×1.75+17.5×0.24
=7.6×1.75+1.75×2.4
=1.75×(7.6+2.4)
=1.75×10
=17.5
x☆(x○4)=x☆(4x-1)=x+4x-1-1=5x-2=30
5x=32
x=6.4
7.48+3.17-(2.48-6.83)
=7.48-2.48+3.17+6.83
=5+10
=15
2、8.75-0.35+(1.25-6.65)
=8.75+1.25-(0.35+6.65)
=10-7
=3
3、7.6×1.75+17.5×0.24
=7.6×1.75+1.75×2.4
=1.75×(7.6+2.4)
=1.75×10
=17.5
x☆(x○4)=x☆(4x-1)=x+4x-1-1=5x-2=30
5x=32
x=6.4
全部回答
- 1楼网友:轮獄道
- 2021-01-31 02:23
7.48+3.17-(2.48-6083)
=7.48+3.17-2.48+6083
=(7.48-2.48)+(3.17+6083)
=5+6086.17
=6091.17
8.75-0.35+(1.25-6.65)
=8.75-0.35+1.25-6.65
=(8.75+1.25)-(0.35+6.65)
=10-7
=3
x☆(x○4)=30
x☆4x=30
x+4x-1=30
5x=29
x=29\5
=7.48+3.17-2.48+6083
=(7.48-2.48)+(3.17+6083)
=5+6086.17
=6091.17
8.75-0.35+(1.25-6.65)
=8.75-0.35+1.25-6.65
=(8.75+1.25)-(0.35+6.65)
=10-7
=3
x☆(x○4)=30
x☆4x=30
x+4x-1=30
5x=29
x=29\5
- 2楼网友:话散在刀尖上
- 2021-01-31 00:52
1、7.48+3.17-2.48﹢6083
﹦7.48-2.48﹢3.17+6083
﹦5+3.17﹢6083
﹦6091.17
2、(8.75﹢1.25)―(0.35+6.65)
﹦10-7
﹦3
3、17.5﹡(0.76﹢0.24)
﹦17.5﹡1
17.5
4、Ⅹ○4=4Ⅹ-1
Ⅹ☆(x○4)=Ⅹ+4Ⅹ-1-1
若x☆(x○4)=30
Ⅹ+4Ⅹ-1-1=30
5Ⅹ-2=30
5Ⅹ≡32
Ⅹ=6.4
﹦7.48-2.48﹢3.17+6083
﹦5+3.17﹢6083
﹦6091.17
2、(8.75﹢1.25)―(0.35+6.65)
﹦10-7
﹦3
3、17.5﹡(0.76﹢0.24)
﹦17.5﹡1
17.5
4、Ⅹ○4=4Ⅹ-1
Ⅹ☆(x○4)=Ⅹ+4Ⅹ-1-1
若x☆(x○4)=30
Ⅹ+4Ⅹ-1-1=30
5Ⅹ-2=30
5Ⅹ≡32
Ⅹ=6.4
- 3楼网友:持酒劝斜阳
- 2021-01-30 23:17
简便:6091.17,3,17.5,
定义新运算:x☆(x○4)=x☆(4x-1)=x+(4x-1)-1=5x-2=30,x=32/5
定义新运算:x☆(x○4)=x☆(4x-1)=x+(4x-1)-1=5x-2=30,x=32/5
- 4楼网友:荒野風
- 2021-01-30 23:03
简便:前两题是去括号算就好,第三题的话就提出17.5,利用乘法分配率的逆运算就好了,算好了答案可以拿再计算器对一下。
定义新运算:x=6.4
定义新运算:x=6.4
- 5楼网友:深街酒徒
- 2021-01-30 21:25
第一题
1、7.48+3.17-(2.48-6083)
=7.48+3.17-2.48+6083
=5+3.17+6083
=6088+3.17
=6091.17
2、8.75-0.35+(1.25-6.65)
=8.75-0.35+1.25-6.65
=8.75+1.25-0.35-6.65
=10-7
=3
3、7.6×1.75+17.5×0.24
=1.75*7.6+1.75*2.4
=1.75*(7.6+2.4)
=1.75*10
=17.5
如果是7.48+3.17-(2.48-6.83)的话,
1、7.48+3.17-(2.48-60.83)
=(7.48-2.48)+(3.17+60.83)
=5+64
=69
第二题
X☆(X○4)=30
X○4=4x-1
X☆(X○4)=x☆(4x-1)=x+4x-1-1=5x-2=30
x=6.4
1、7.48+3.17-(2.48-6083)
=7.48+3.17-2.48+6083
=5+3.17+6083
=6088+3.17
=6091.17
2、8.75-0.35+(1.25-6.65)
=8.75-0.35+1.25-6.65
=8.75+1.25-0.35-6.65
=10-7
=3
3、7.6×1.75+17.5×0.24
=1.75*7.6+1.75*2.4
=1.75*(7.6+2.4)
=1.75*10
=17.5
如果是7.48+3.17-(2.48-6.83)的话,
1、7.48+3.17-(2.48-60.83)
=(7.48-2.48)+(3.17+60.83)
=5+64
=69
第二题
X☆(X○4)=30
X○4=4x-1
X☆(X○4)=x☆(4x-1)=x+4x-1-1=5x-2=30
x=6.4
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