30×(100-40)x = 30×40(50-x)
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30×(100-40)x=30×40(50-x)30×(100-40)x=30×40(50-x)30×(100-40)x=30×40(50-x)30×(100-40)x=30×40(50-x)两边同除
30×(100-40)x = 30×40(50-x)
30×(100-40)x = 30×40(50-x)
30×(100-40)x = 30×40(50-x)
30×(100-40)x = 30×40(50-x)
两边同除以30,得 ﹙100-40)x=40(50-x)
去括号,得 60x=2000-40x
移项,得 60x+40x=2000
100x=2000
x=20
30×(100-40)x = 30×40(50-x)
60x=40(50-x)
6x=4(50-x)
6x=200-4x
10x=200
x=20
x除55%=100 60%x=30 x+50%x=4.5 (1-25%)x=72 4x+40%x=176 解方程
40*(x-100)=100+30x
X/(x-30)=(x+40)/X解方程,
60%x+25=40 x+30%x=52 19-120%x=7 4分之3x-5%x=17.5 x-10%x=18 (1-25%)x=36 2x+30%x=9.2
40%x+(40%x-30)+120=x怎么解
40%x+(40%x-10)=x-30怎么解
x-30%x-30%x-20=40 如何解,
60(30x)=40x+20(30+x)+1200
(16x-13)/(4x-3)-(20x-24)/(4x-5)=(32x-30)/(8x-7)-(40x-43)/(8x-9)求x
谁知道这道方程题如何做啊x-(40%x+10)-40%x=30不是x-(40%x+10)-40%x=30,是
40%x-30=30%x-9
25%x=100 2x+30%x=9.2 x—75%=1025%x=100 2x+30%x=9.2 x—75%=10 60%x+25=40
100/40x+(100/40x-10)+30=
40%x/(x+5)=30%x 怎么解
30x=40(8.45-x) 求X
40x/x-30x=-5955 求解
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
40%x-30%x=8 100+20%=40