Question

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3yd + 7yn + 57d +133n

Answer 1

3yd + 7yn + 57d +133n = y(3d + 7n) + 19(3d +7n) = (y+19) (3d + 7n)

Answer 2

$3yd+7yn+57d+133n \\y*(3d+7n)+19(3d+7n) \\(3d+7n)*(y+19)$