(1+0.8%)x+(1+1.1%)×(42-x)=(1+1%)×42

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(1+0.8%)x+(1+1.1%)×(42-x)=(1+1%)×42
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(1+0.8%)x+(1+1.1%)×(42-x)=(1+1%)×42
(1+0.8%)x+(1+1.1%)×(42-x)=(1+1%)×42

(1+0.8%)x+(1+1.1%)×(42-x)=(1+1%)×42
(1+0.8%)x+(1+1.1%)×(42-x)=(1+1%)×42
1.008x+1.011*42-1.011x=1.01*42
-0.003x=-0.001*42
x=14

(1+0.8%)x+(1+1.1%)×42-（1+1.1%）x=(1+1%)×42
(1+0.8%)x-(1+1.1%)x=(1+1%)×42-(1+1.1%)×42
(-0.3%)x=(-0.1%)×42
x=14

x＋0.8%x＋1.011×42－1.011x＝1.01×42
1.011x－1.008x＝0.042
x＝14

1.1/x|x/(x+1)| 因式分解：1.1+a+b+c+ab+bc+ca+abc 2.x*x*x*x*x*x*x*x+x*x*x*x+1 x/x+(1-x)/x-1/x *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x 七年级下册政治复习提纲(山东人民出版社)第五单元是 青春的脚步 青春的气息别弄错了啊!格式：X X X X X X X X X 1、X X X X X X X X X X.2、X X X X X X X X X.3、X X X X X X X X X X X. (x+1)(x-1)(x-x+1)(x+x+1) 分解因式----（X*X-X)(X*X-X-2)+1 X(X-1)=X x/x-1[1+(x-1/x)] x-1/x÷(x-1/x) 】x(x+1)+x^2(x-1) 1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做 x*(1+40/100)*0.8-x=15 X=? 1.1/x+1/x+1=5/2x+2 解方程 2.24、x-17-x/x-1=1 x-4/1x=8/3 x-0.8x=22 3/2x+2/1x=42x-4/1x=8/3 x-0.8x=22 3/2x+2/1x=42 0.5x+3=0.8x+1 （X-1)/0.2 -X/0.8 =10