Can white hold the position together?

[fen]2b2k2/b4p1p/p3p3/6p1/4P3/1NN5/PP3P1P/6K1 w - - 0 28[/fen]

[fen]8/1p2kp1p/1pb1p3/r3P3/3R1P1p/8/PP4P1/2N3K1 w - - 0 25[/fen]

[fen]6k1/1p5p/3n4/1P2b3/6B1/8/R6K/8 w - - 0 44[/fen]