(1)x÷3/7=10*2/5 92)6x*3/7=9/10 (3)x-2/3x=2/9 (4)3/4-2x=5/8(/
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/25 00:00:24
(1)x÷3/7=10*2/5 92)6x*3/7=9/10 (3)x-2/3x=2/9 (4)3/4-2x=5/8(/这个符号代表分数线,不是除号
(1)x÷3/7=10*2/5 9
X=﹙20/59﹚×﹙7/3﹚
X=140/177
2)6x*3/7=9/10
6x=﹙9/10 ﹚×﹙7/3﹚
6X=21/10
X=﹙21/10﹚÷6
X=7/20
3)x-2/3x=2/9
解;﹙1/3﹚X=2/9
X=﹙2/9﹚×3
X=2/3
(4﹚3/4-2x=5/8
2x=﹙3/4﹚﹣5/8
2x=1/8
X=﹙1/8﹚÷2
X=1/16
X=﹙20/59﹚×﹙7/3﹚
X=140/177
2)6x*3/7=9/10
6x=﹙9/10 ﹚×﹙7/3﹚
6X=21/10
X=﹙21/10﹚÷6
X=7/20
3)x-2/3x=2/9
解;﹙1/3﹚X=2/9
X=﹙2/9﹚×3
X=2/3
(4﹚3/4-2x=5/8
2x=﹙3/4﹚﹣5/8
2x=1/8
X=﹙1/8﹚÷2
X=1/16
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
1x()+2x()+3x()+4x()+5x()+6x()+7x()+8x()加9x()+10x()=1980
1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值
(X+2)/(X+1)-(X+4)/(X+3)=(X+6)/(X+5)-(X+8)/(X+7)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3