x-(40%x-3)=75
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x-(40%x-3)=75x-(40%x-3)=75x-(40%x-3)=75x-(40%x-3)=75x-40%x+3=7560%x=72x=12012060%x=72x=90x-(40%x-3)=
x-(40%x-3)=75
x-(40%x-3)=75
x-(40%x-3)=75
x-(40%x-3)=75
x-40%x+3=75
60%x=72
x=120
120
60%x=72
x=90
x-(40%x-3)=75
解:x-40%x+3=75
60%x=75-3
60%x=72
x=120
x-40%x+3=75
60%x=72
0.6x=72
x=120
x-(40%x-3)=75
40％*X - 3 + 75 =X
x*x=75%x*(x+3)怎么解?
x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4（x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
x-40%x=
解方程 90-20%x=80 x-25%x=21 x+60%x=3.2 70%x+46=60 （1-75%）x=36 3x+40%x=23.8
(16x-13)/(4x-3)-(20x-24)/(4x-5)=(32x-30)/(8x-7)-(40x-43)/(8x-9)求x
解分式方程：1/X-2+1/X-6=1/X-7+1/X-11/X-2+1/X-6=1/X-7+1/X-11/(x-2)-1/(x-1)=1/(x-7)-1/(x-6)(x-1-x+2)/(x-2)(x-1)=(x-6-x+7)/(x-7)(x-6)1/(x-2)(x-1)=1/(x-7)(x-6)(x-2)(x-1)=(x-7)(x-6)x^2-3x+2=x^2-13x+4213x-3x=42-210x=40x=4 为什么要移向才能解
x{x+1}{x-1}}x-2}{x-3}-40
3x*x=1600+x*x-80x
(X+1)X(X+2)X(X+3)=504
一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X
75%x+40%X(14-x)=50%X14
(x+x+2.5)*(3/5)=75-(3/7)x
解方程2X-(X+3(X-5)=75
x-1/3x+5=75％x如何解?
x-20%x-40/20%x+40=3