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If x+3y=7 and x-3y=1 what's y

If x+3y=7 and x-3y=1 what's y
asked 96.7k views
3 votes
If x+3y=7 and x-3y=1 what's y

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User Kiwifrog
by
7.4k points

1 Answer

4 votes

Subtract one equation from the other to eliminate x :

(x + 3y) - (x - 3y) = 7 - 1

6y = 6

y = 1

answered
User Oleksandr Poshtaruk
by
7.3k points
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