Question

if 2x+3y=14and2x-3y=2 find xy

Answer 1

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Answer 2

$2x + 3y = 14..............(1) \\ 2x - 3y = 2.................(2) \\ adding \: (1)and(2) \: we \: get \: \\ 4x = 16 \\ x = \frac{16}{4} \\ x = 4 \\ put \: x = 4 \: in \: (1) \\ 2(4) + 3y = 14 \\ 8 + 3y = 14 \\ 3y = 14 - 8 \\ 3y = 6 \\ y = \frac{6}{3} \\ y = 2 \\ \\ \\ \\ hence.x = 4 \: and \: y = 2. \\ l \: hope \: it \: will \: help \: you$