(1+50%)x*90%-x-50=370怎么算

90-x=50+x 50x(x-1)+60x(x-4)=5100 (x+1)+(x+2)+(X+3).+(x+50)=1325 x+ x+(x*50%)=1.5X? 90/(x-90)=(2x-50)/(x+50) x+3x+x-2+x+x+50%x=188 求x 50X+(50-5)(X+1)=425,x=? 求几道解方程数学题60%x+25=40 x+30%x=52 19-120%x=7 x-10%x=18 (1-25%)x=362x+30%x=9.260%x+90=102 x-20%=5.2 50%x+3x=28 9.1-14%x=0.7 求解下面的一些方程,好的我加50财富啊(170-x)*1/3-1/4x=102/3x+(135-x)*4/5=983x+2(100-x)=3004x-3(20-x)=6x-7(11-x)23-x/x+19=1/5x+180/90=x-180/60 x/40+x/50=1+1/200*x =(x^2-5x)^2+10(x^2-5x)+24 =x^4-10x^3+25x^2+10x^2-50x+24 这是怎么转化的(X-1)(X-2)(X-3)(X-4) =(X-1)(X-4) (X-2)(X-3)=（x^2-5x+4)(x^2-5x+6)=(x^2-5x)^2+10(x^2-5x)+24=x^4-10x^3+25x^2+10x^2-50x+24=x^4-10x^3+35x^2-50x+24 80%X*(1+50%)=10+X 求X是多少? 1.5X+20=1X（50-X)怎么算? 45x+10 =50X（x-1） =（x^2-5x+4)(x^2-5x+6) =(x^2-5x)^2+10(x^2-5x)+24 是怎么转化的(X-1)(X-2)(X-3)(X-4) =(X-1)(X-4) (X-2)(X-3)=（x^2-5x+4)(x^2-5x+6)=(x^2-5x)^2+10(x^2-5x)+24=x^4-10x^3+25x^2+10x^2-50x+24=x^4-10x^3+35x^2-50x+24不好意思我弄错了，是=（x^2-5 50X=200+X*X 30%x=50%x-20x 5x+1/4乘16=34 50%x-35%x=3 11/12x-20%x=43 3x+37%=1