Math

9y + z = 36 7y + 5z = 104

Asked by AnneS2 on 24 Apr 03:45

Last updated by anonymous on 28 Apr 20:09

1 Answers

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Answered by CherieS on 28 Apr 20:09

9y + z = 36 7y + 5z = 104

9y-9y+z=36-9y

z=36-9y

7y + 5z = 104

7y+5(36-9y)=104

7y+180-45y=104

7y-45y+180=104

-38y+180=104

-38y+180-180=104-180

-38y=-76

-38y/-38=-76/-38

y=2

z=36-9y

z=36-9(2)

z=36-18

z=18