35am + 30mu - 15au - 70m² = (35am - 70m²) - (15au - 30mu) =
= 35m(a - 2m) - 15u(a - 2m) = (a - 2m)(35m - 15u) = 5(a - 2m)(7m - 3u)
35am + 30mu - 15au - 70m² = (35am - 70m²) - (15au - 30mu) =
= 35m(a - 2m) - 15u(a - 2m) = (a - 2m)(35m - 15u) = 5(a - 2m)(7m - 3u)