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8x - 7y = 7 (A)7x + 8y = 8 (B)

7*(A): 56x - 49y = 49

8*(B): 56x + 64y = 64


8*(B)-7*(A): (64+49)*y = 64-49

=> 113y = 15

=> y = 15/113


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Q: How do I solve for y the linear equations 8x-7y equals 7 and 7x equals 8y equals 8?
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