# College Math

posted by .

Could you show me how to do

5z/7 - 5z/8 = 1

But how did they get it ?

• College Math -

sorry the correct answer is 56/5

• College Math -

40z/56 - 35z/56 = 1

5 z/56 = 1

z = 56/5

• College Math -

Thank you :)

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