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Natalka [10]
3 years ago
11

If (3)x+y = 81 and (81)x-y = 3 find the values of x and y.

Mathematics
1 answer:
ratelena [41]3 years ago
7 0
You have to isolate the variables meaning you have to do the opposite of multiply 81 you have to divide 3/81: x and y for both sides will be the same thing
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