Question

1) 1x + 1y + 1xy
2) 2a3a+3 + 5a6a+6
(сначала упростить знаменатели)

Answer 1

1/х + 1/у + 1/ху = у+х+1/ху
2а/(3а+3) + 5а/(6а+6) = 4а+5а/(6а+6) = 9а/(6а+6)