作业帮5X=4*(4/5X)+60
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5X=4*(4/5X)+60
5X=4*(4/5X)+60
5X=4*(4/5X)+60
5X=4*(4/5X)+60 两边乘以5
25x=16x+300
25x-16x=300
9x=300
x=300÷9
x=100/3
(4/x-5)+(x-3)/(12-x)=(x-45)/(x^2-17x+60)
*-----------------------------------------------*| 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 ||
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
提取公因式:已知x*x-5x+1=0 求x*x*x-4x*x-4x-1
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
x^-6x+5=x+4
5*4x+x*x=80
y=|-x.x+4x+5|
写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4
x-x/4=x/4+4x/5-30.
x-3/4x=(108-x)-4/5x
4x-7x=9-5x x=?
x+x-60+5分之4x+6=814