60x-60(250-x)=1000怎么解
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60x-60(250-x)=1000怎么解
60x-60(250-x)=1000怎么解
60x-60(250-x)=1000怎么解
60x-60(250-x)=1000
60×[x-(250-x)]=1000
3×(x-250+x)=50
3×(2x-250)=50
6x-750=50
6x=800
x=800/6
x=400/3
60x-60(250-x)=1000
两边同除以20得:
3x-3(250-x)=50
3x-750+3x=50
6x=800
x=800/6
x=400/3
400/3
60x-60(250-x)=1000
60x-15000+60x=1000
60x+60x=1000+15000
120x=16000
x=400/3
60x-15000+60x=1000
120x=16000
x=400/3
60x - 60(250-x) = 1000
6x - 6(250-x) = 100
6x - 1500 + 6x = 100
12x = 1600
3x = 400
x = 400 / 3