60(30x)=40x+20(30+x)+1200
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60(30x)=40x+20(30+x)+120060(30x)=40x+20(30+x)+120060(30x)=40x+20(30+x)+12001800x=40x+600+20x+1200180
60(30x)=40x+20(30+x)+1200
60(30x)=40x+20(30+x)+1200
60(30x)=40x+20(30+x)+1200
1800x=40x+600+20x+1200
1800x-60x=1800
1200x=1800
x=1.5
60(30x)=40x+20(30+x)+1200
60x(x-4)=30x
X-30%X+8-X=20
30%x=50%x-20x
(16x-13)/(4x-3)-(20x-24)/(4x-5)=(32x-30)/(8x-7)-(40x-43)/(8x-9)求x
(x+30)*(x-18)=x*x
20%x+20%x×30%x-20%x=4.5
X/(x-30)=(x+40)/X解方程,
x-30%x-30%x-20=40 如何解,
x-60%x-25%x=25%x-30
50%x+x=20 x+30%x=52
x-30%x=14x+25%x=20
x/6+x/12+x/20+x/30=1
(30-x):(18+x)=(20+x):(32-x)
x+(30-x)=60
40X=60(30-X)
40%x+21=37x-78%x=2.2x+30%x=26(1-25%)x=1540%x-30=152x+20%x=3.3怎么列式计算jijiji40%x+21=37x-78%x=2.2x+30%x=26(1-25%)x=1540%x-30=152x+20%x=3.3
(16x-13)/(4x-3)+(40x-43)/(8x-9)=(32x-30)/(8x-7)+(20x-24)/(4x-5)....