780-x)/x*100%=25%化简 (675-y)/y*100%=10%化简
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780-x)/x*100%=25%化简(675-y)/y*100%=10%化简780-x)/x*100%=25%化简(675-y)/y*100%=10%化简780-x)/x*100%=25%化简(67
780-x)/x*100%=25%化简 (675-y)/y*100%=10%化简
780-x)/x*100%=25%化简 (675-y)/y*100%=10%化简
780-x)/x*100%=25%化简 (675-y)/y*100%=10%化简
(780-x)/x=1/4
(675-y)/y=1/10
x=4(780-x) 5x=4*780 x=4*154
y=10(675-y) 11y=10*675
(X+X)+(X-X)+(X*X)+(X/X)=100
x-2x+3x-4x+5x.+99x-100x=25求解
(100-x)/x=25% 求x怎么算?
解方程:x-2x+3x-4x+...+99x-100x=25
解方程:x-2x+3x-4x+.+99x-100x=25
x-2x+3x-4x+...+99x-100x=25
780-x)/x*100%=25%化简 (675-y)/y*100%=10%化简
780-x)/x*100%=25%化简 (675-y)/y*100%=10%化简
化简:2x^2-50/x^2-10x+25(x=3)
(x+x)+(x-x)+(x/x)=11.2
x除55%=100 60%x=30 x+50%x=4.5 (1-25%)x=72 4x+40%x=176 解方程
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x*x*x*x+2008x*x+2007x+2008(提示:x*x*x-1=(x-1)*(x*x+x+1))
600-25X+100X-5X^2=840