跪求！！！初一代数式化简求值10题。。。。。快啊！！！！

.3ab-4ab+8ab-7ab+ab=______.
.7x-(5x-5y)-y=______.
.23a3bc2-15ab2c+8abc-24a3bc2-8abc=______.
.-7x2+6x+13x2-4x-5x2=______.
.2y+(-2y+5)-(3y+2)=______.
.(2x2-3xy+4y2)+(x2+2xy-3y2)=______.
2a-(3a-2b+2)+(3a-4b-1)=______.

.2x-(x+3y)-(-x-y)-(x-y)=______.
.2x+2y-[3x-2(x-y)]=______.
.5-(1-x)-1-(x-1)=______.
.( )+(4xy+7x2-y2)=10x2-xy.
.(4xy2-2x2y)-( )=x3-2x2y+4xy2+y3.
.已知A=x3-2x2+x-4,B=2x3-5x+3,计算A+B=______.
.已知A=x3-2x2+x-4,B=2x3-5x+3,计算A-B=______.
.若a=-0.2,b=0.5,代数式-(|a2b|-|ab2|)的值为______.
.一个多项式减去3m4-m3-2m+5得-2m4-3m3-2m2-1,那么这个多项式等于______.

是要10个这样的题目还是求解答啊？
求解答的话题呢？
求题目的话邮箱呢？