Question

53²-27²
______
79²-51²

Answer 1

$frac{ {53}^{2} - {27}^{2} } { {79}^{2} - {51}^{2} } = frac{(53 - 27)(53 + 27)}{(79 - 51)(79 + 51)} = frac{26 times80}{28 times 130} = frac{4}{7}$

Answer 2

$frac{53 ^{2}-27 ^{2} }{79 ^{2}-51 ^{2} } = frac{(53-27)(53+27)}{(79-51)(79+51)}= frac{26*80}{28*130} = frac{2*2}{7}= frac{4}{7}$