(1)-3-4+19-(+11)-(-2),=-7+19-11+2,=3;(2)?22+(?2)4×( 1 2 )3?|?0.28|÷(? 1 10 )2,=-4+16× 1 8 -0.28×100,=-4+2-28,=-30;(3)3x2+(y?2x2)? 3 4 (4x2?6y),=3x2+y-2x2-3x2+ 9 2 y,=-2x2+ 11 2 y.