Mathematics, 08.01.2020 01:31 londonval

For each of the following pairs a, b of integers, find the greatest common divisor d of a and b and express d in the form ar + bs: (i) a = 7 and b = 11; (ii) a = −28 and b = −63; (iii) a = 91 and b = 126; (iv) a = 630 and b = 132; (v) a = 7245 and b = 4784; (vi) a = 6499 and b = 4288.

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For each of the following pairs a, b of integers, find the greatest common divisor d of a and b and...