Question 1042626
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Find the value of x and y if 7^x+y=343 and 7^x-y=49?
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Are you a novice in this site?

Your writing is ambiguous. To avoid ambiguity, use parentheses.
It is mandate when you post formulas to this site.


So , I am reading your post in this way: {{{7^(x+y)}}} = 343,  {{{7^(x-y)}}} = 49.


Then 

x + y = 3, 
x - y = 2,

and you can easily solve it on your own, if you add the two equations as the first step.
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