,只要答案就OK,.
1.-1+(+11)-(-8)+(-4)
2.8-2×(-3)-(-4)÷(-½)
3.-1²-|0.5-2/3|÷1/3×【-2-(-3)²】
4.化简:4ab+8-2b²-9ab-6
5.先化简,再求值:已知:3x²y-【2x²y-3(2xy-x²y)-xy】其中x=-1,y=-2
6.解方程:8x-15=3x+30