упростить 5(p-2)-6(p+3)-3(2p-9)

Distribute: 5p - 10 - 6p - 18 - 6p + 27.
Combine like terms: (5p - 6p - 6p) + (-10 - 18 + 27).
Simplify: -7p + (-1) = -7p - 1.