SOLUTION: Stepdaughter called from Oregon with this problem.... 3x + y =18 ---------- x +3y = 14
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-> SOLUTION: Stepdaughter called from Oregon with this problem.... 3x + y =18 ---------- x +3y = 14
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Question 107032
:
Stepdaughter called from Oregon with this problem....
3x + y =18
----------
x +3y = 14
Answer by
scott8148(6628)
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multiplying first equation by -3 gives -9x-3y=-54 ... adding second equation gives -8x=-40, so x=5
5+3y=14 ... 3y=9 ... y=3
