解两道因式方程~~要过程!
问题描述:
解两道因式方程~~要过程!
1 720000/X=700000/(X-1000)
2s/(s-1000)=72/70
答
720000/X=700000/(X-1000)
72/x=70/(x-1000)
72(x-1000)=70x
72x-72000=70x
72x-70x=72000
2x=72000
x=36000
s/(s-1000)=72/70
70s=72(s-1000)
70s=72s-72000
72s-70s=72000
2s=72000
s=36000