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tensa zangetsu [6.8K]
3 years ago
12

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

Mathematics
1 answer:
vazorg [7]3 years ago
6 0

Subtract one equation from the other to eliminate <em>x</em> :

(<em>x</em> + 3<em>y</em>) - (<em>x</em> - 3<em>y</em>) = 7 - 1

6<em>y</em> = 6

<em>y</em> = 1

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