解:原式=3又1/3-2^2/[(1/2)^2-(-3+0.75)]*5
=10/3-4/[1/4-9/4]*5
=10/3+4/2*5
=10/3+2/5
=56/15
3又1/3-2^2/[(1/2)^2-(-3+0.75)]*5
解:原式=3又1/3-2^2/[(1/2)^2-(-3+0.75)]*5
=10/3-4/[1/4-9/4]*5
=10/3+4/2*5
=10/3+2/5
=56/15
原式=(3又1/3-2)²÷[1/2²-(-3+0.75)]×5
=49/9÷2/25
=?答案自己算