4.2(X—2)=8.4 8.7(X-5.9)=0 4.2(X—2)=8.4 8.7(X-5.9)=0

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4.2(X—2)=8.48.7(X-5.9)=04.2(X—2)=8.48.7(X-5.9)=04.2(X—2)=8.48.7(X-5.9)=04.2(X—2)=8.48.7(X-5.9)=04.2(

4.2(X—2)=8.4 8.7(X-5.9)=0 4.2(X—2)=8.4 8.7(X-5.9)=0
4.2(X—2)=8.4 8.7(X-5.9)=0
4.2(X—2)=8.4 8.7(X-5.9)=0

4.2(X—2)=8.4 8.7(X-5.9)=0 4.2(X—2)=8.4 8.7(X-5.9)=0
4.2(X—2)=8.4
x-2=8.4/4.2=2
x=2+2=4
8.7(X-5.9)=0
x-5.9=0
x=5.9

4.2(X—2)=8.4
x-2= 2
x=4
8.7(X-5.9)=0
x-5.9=0
x=5.9

4.2(X-2)=8.4
X-2=8.4/4.2
X-2=2
X=4
8.7(X-5.9)=0
X-5.9=0
X=5.9

4.2(x－2)÷4.2=8.4÷4.2 8.7（x－5.9）÷8.7=0÷8.7
x－2=2 x－5.9=0
x－2＋2=2＋2 x－5.9＋5.9=
x=4

4.2(X-2)=8.4
X-2=8.4/4.2
X=2+2=4
8.7(X-5.9)=0
X=5.9
第二题属于特类题 ,一看就应该知道X-5.9必须等0.这样的题不用计算的.

X--1.4+0.6=2.4
x=2.4-0.6+1.4
x=3.2

0.95*4+6x=5 4.2(x-2)=8.4 (x+3.2)*0.4=1.6 x-1.1+0.6=2.4 8.7(x-5.9)=09.2x-x=49.2 x+2.5x=0.7 x-0.76x=0.96 12x=300-4x x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) (x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2 x(x-2)-2x(x+1)-3x(x-5) 其中x=负½ (x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) x-2x+3x-4x+5x.+99x-100x=25求解 2x+3x+4x+5x+x+6x+7x=100 x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x 4.2(X—2)=8.4 8.7(X-5.9)=0 4.2(X—2)=8.4 8.7(X-5.9)=0 5X-6.6=8.4+2X f(x,-x)=x^2+2x,fx(x,-x)=5x+1,则fy(x,-x)= x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? x^5-2x^3+x=? 写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4 18%x+32%x=2 x+20%x=2.4 x+5%x=4.2 15%x+35%x=0.2 *-----------------------------------------------*| 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 || 4.2-0.6x=3.6x 5x+2x=33.6 7x-4x=0.75 2x+7x+2.1=12 56x-32x-119=361 x+5=2x 3x+9=6x 4x-28=2x 2x+18=7x 5x=25*4-15x 7x-x+2*3=29.4 (28.8+5.5x+3.2）除2=71