x/2*50+100=50x

x+3x+x-2+x+x+50%x=188 求x x/2*50+100=50x x-50%x=100 (x+1)+(x+2)+(X+3).+(x+50)=1325 x+ x+(x*50%)=1.5X? y=|x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|……+|x-99|+|x-100|+50n的最小值 （100-2X）x（50-2x）=3600算一下x=? （X+X)+(X-X)+(X*X)+(X/X)=100 30-3（3-X）=4X 3X+12*6=15X+12 4X-2(50-X)=20 12(X-13)=10(X+3) 100-X=3(20+X) (100-2x)(50-2x)=3600 5000-200x-100x+4x(2)=3600 4x(2)-300x+1400=0(100-2x)(50-2x)=36005000-200x-100x+4x^2=36004x^2-300x+1400=0为什么不是5000-3600=200x+100x+4x^2=300x+100x+4x^2-1400=0 解方程：（1）2x-19=7x+31 (2)20-2x=x-1 (3)19-x=100-10x (4)1/3x+5=2/3x-62x-19=7x+317x-2x=-19-31这里应该是31+19吧？5x=-50x=-50÷5x=-10 10x+2x*[(50-x)/2]+5x[(50-x)/2]=240 30x+20x-x^2=50x-x^2 怎么算 一元一次方程：x-100/50-2=x-100/60+5 x/120-x/130=2 6x+x-1/5+1=100 2x-1/3-10x+1/12=2x+1/4-1 解方程26(8-X)-6=150 4x-2(x+20)=40 4x-2(100-x)=40 4x-2(50-x)=20 9(x-8)=8x=10 90/(x-90)=(2x-50)/(x+50) 50*2X=X*（50-X）*10 50/(x-50)=(x+18)/(2x-18)