3(x+2)-2(x-3)=16 2.5(5-x)=3(x+4)-3

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/24 03:58:25
3(x+2)-2(x-3)=162.5(5-x)=3(x+4)-33(x+2)-2(x-3)=162.5(5-x)=3(x+4)-33(x+2)-2(x-3)=162.5(5-x)=3(x+4)-33

3(x+2)-2(x-3)=16 2.5(5-x)=3(x+4)-3
3(x+2)-2(x-3)=16 2.5(5-x)=3(x+4)-3

3(x+2)-2(x-3)=16 2.5(5-x)=3(x+4)-3
3(x+2)-2(x-3)=16
3X+6-2X+6=16,
X=4
2.5(5-x)=3(x+4)-3
25-5X=3X+12-3
-8X=-16
X=2.

3(x+2)-2(x-3)=16
3x + 6 -2x + 6 = 16
x = 4
2.5(5-x)=3(x+4)-3
12.5 - 2.5x = 3x + 12 -3
3.5 = 5.5x
x = 11 分之 7

答:
1)3(x+2)-2(x-3)=16
3x+6-2x+6=16
x+12=16
x=4
2)2.5(5-x)=3(x+4)-3
12.5-2.5x=3x+12-3
3x+2.5x=12.5-9
5.5x=3.5
x=3.5/5.5
x=7/11

请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360 (x+2)(x-2)+16 (x-1)(x-2)+3x(x+3)-4(x+2)(x-3)(x+2)(x-2)+16 (x-1)(x-2)+3x(x+3)-4(x+2)(x-3) (x/x-2)-2=3(x-2)/x x(2x-3)=x² 求x, 解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) 解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3) 问几道解方程x/6-x=(x-3)/6x-1=1/2x+1/4x+1/8x+1/16x+1/32x77/x=2.5*77/x+2.4要注明是哪一题 (1)X-3/X-1+X²-2/(x-1)(X-7)=1+x-5/x-7 (2)2x-1/x+4-5=96/x²-16-1-3x/4-x 4+6X(3x-2)=16x 怎么解方程?注备:X=乘 x=x (X-3分之x-1-x分之x-4)除以x的平方+3x分之(x+3)(x-2),其中(x-1)(x-2)=0 解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x- 1.(x+1)(2x-3)-(x-1)(x+2)=x.x+71.(x+1)(2x-3)-(x-1)(x+2)=x.x+72.(2x+1)(4x.x-2x+1)-2x(4x.x+1)=03.(x-3)(x+2)=x.x-16 (1)(2x/x-1)-(x-1/x)=1 (2)(x^2-4x/x^2-1)+1=2x/x+1 (3)(x+4/x^2+2x)-(1/x+2)=(2/x)+1 (1)(2x/x-1)-(x-1/x)=1 (2)(x^2-4x/x^2-1)+1=2x/x+1 (3)(x+4/x^2+2x)-(1/x+2)=(2/x)+1 x+5/x+1-3x-3/x+5=8x+28/x^2+4X-5-2(x+5)/(x+1)-(3x-3)/(x+5)=(8x+28)/(x^2+4X-5)-2 1.(1/X-1 )-2=X^-3X/X^-12.(X/X+1)^+5(X/X+1)+6=03.(8(X^+2X)/X^-1)+ 3(X^-1)/X^+2x 当x=根号3/3,代数式[(x*x-3x)/x]除以[x+(3/2-x)]