100+100(x-1)(1-25%)=100x(1-20%)如何解?

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100+100(x-1)(1-25%)=100x(1-20%)如何解?
100+100(x-1)(1-25%)=100x(1-20%)如何解?

100+100(x-1)(1-25%)=100x(1-20%)如何解?
100+100*(0.75)(x-1)=100X(0.8)
100+75(x-1)=80X
100+75X-75=80X
25=5X
x=5

100+100(x-1)(1-25%)=100x(1-20%)
100+75（x-1)=80
100+75x-75=80
75x=80+75-100
75x=55
x=55÷75
x=15分之11

100+75x-75=80x
5x=25
x=5

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