Math

Solve for 4x + y = 39 and x + y = 12

Asked by AnneS2 on 14 Jul 08:54

Last updated by anonymous on 15 Jul 13:36

1 Answers

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Answered by CherieS on 15 Jul 13:36

x + y = 12

x -x+ y = 12-x

y = 12-x

4x + y = 39

4x + 12-x = 39

3x + 12= 39

3x + 12-12= 39 -12

3x=27

3x/3=27/3

x=9

y = 12-x

y = 12-9=3