1,(-2)+(-5)+7+(-3) 2,(-31)+(+12)+(-29)+(+8) (简便运算)3,12+(-29)+(-12)+29+1 4,(-21)+(+5)+(-6)+(-3) ,简便运算!
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 17:44:21
![1,(-2)+(-5)+7+(-3) 2,(-31)+(+12)+(-29)+(+8) (简便运算)3,12+(-29)+(-12)+29+1 4,(-21)+(+5)+(-6)+(-3) ,简便运算!](/uploads/image/z/33598-46-8.jpg?t=1%2C%28-2%29%2B%28-5%29%2B7%2B%28-3%29+2%2C%EF%BC%88-31%29%2B%28%2B12%29%2B%28-29%29%2B%28%2B8%29+%28%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%EF%BC%893%2C12%2B%EF%BC%88-29%EF%BC%89%2B%EF%BC%88-12%EF%BC%89%2B29%2B1+4%2C%EF%BC%88-21%EF%BC%89%2B%EF%BC%88%2B5%EF%BC%89%2B%EF%BC%88-6%EF%BC%89%2B%EF%BC%88-3%EF%BC%89+%2C%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%21)
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1,(-2)+(-5)+7+(-3) 2,(-31)+(+12)+(-29)+(+8) (简便运算)3,12+(-29)+(-12)+29+1 4,(-21)+(+5)+(-6)+(-3) ,简便运算!
1,(-2)+(-5)+7+(-3) 2,(-31)+(+12)+(-29)+(+8) (简便运算)
3,12+(-29)+(-12)+29+1 4,(-21)+(+5)+(-6)+(-3) ,简便运算!
1,(-2)+(-5)+7+(-3) 2,(-31)+(+12)+(-29)+(+8) (简便运算)3,12+(-29)+(-12)+29+1 4,(-21)+(+5)+(-6)+(-3) ,简便运算!
1,(-2-5+7)-3等于0-3等于-3 2,(-31-29)+(12+8)等于-60+20等于-40 3,12-12+29-29+1等于0+0+1等于1 4,-21+(5-6)-3等于-25
-|-2/3-(+2/3)|-|(-1/5)+(-2/5)| |4/7-2/5|-|3/5-7/9|+|2/9-3/7|
-3/7+3/2+1+-5
1+3+5+7+.+(2n-1)
3/2 x 5/7 - (-5/7)x5/2 +(-1/2) 除以7/5 等于多少,
3+5+7+.+(2n+1)=
1、2、3、4、5、6、7
1,2,3,4,5,6,7,
1,2 ,3,4,5,6,7
1+2-3+4-5+6-7
1,2,3,5,7,11.
1+2+3+4+5+6+7
1,2,3,4,5,6,7
1+2+3+4+6+7+5
1,2,3,4,5,7题,
1、2、3、4、5、6、7
1,2,3,4,5,6,7
1、2、3、4、5、7、8
1×2×3×4×5×6×7