50x+40(1100-x)=50(1+10%)x+40(1-15%)(1100-x)
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50x+40(1100-x)=50(1+10%)x+40(1-15%)(1100-x)50x+40(1100-x)=50(1+10%)x+40(1-15%)(1100-x)50x+40(1100-x)
50x+40(1100-x)=50(1+10%)x+40(1-15%)(1100-x)
50x+40(1100-x)=50(1+10%)x+40(1-15%)(1100-x)
50x+40(1100-x)=50(1+10%)x+40(1-15%)(1100-x)
50x+40(1100-x)=50(1+10%)x+40(1-15%)(1100-x)
50x+44000-40x=55x+37400-34x
11x=6600
x=600
苍天啊
x/40+x/50=1+1/200*x
x加30%x=52、x减40%x=15、50%x加x=31.5、x减1%x=19.8、x加25%x=2.5、x减15%x=8.5
X/50+(40-X)/30=1
x/50+5-1=x/40
50x(x-1)+60x(x-4)=5100
(x+1)+(x+2)+(X+3).+(x+50)=1325
x+ x+(x*50%)=1.5X?
50x+40(1100-x)=50(1+10%)x+40(1-15%)(1100-x)
x除55%=100 60%x=30 x+50%x=4.5 (1-25%)x=72 4x+40%x=176 解方程
解方程 40%x=12 (1+60%)x=24 (1-37.5%)x=10 2x+50%x=20 40%x+30%x=140 35%x-15%x=72
x+3x+x-2+x+x+50%x=188 求x
50X+(50-5)(X+1)=425,x=?
50x=40x(18-x)怎么解
75%x+40%X(14-x)=50%X14
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
=(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?