作业帮ab-{2ab-2[3a²b-(4ab²+0.5ab)-6a²b]}-3ab² X=三分之二a=-1 b=3抱歉看错了还有一题哈 （xy减去三分之二y减去三分之二）减去（二分之一x 减去二分之一xy+1）X=三分之二
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/26 22:42:35
![ab-{2ab-2[3a²b-(4ab²+0.5ab)-6a²b]}-3ab² X=三分之二a=-1 b=3抱歉看错了还有一题哈 （xy减去三分之二y减去三分之二）减去（二分之一x 减去二分之一xy+1）X=三分之二](/uploads/image/z/1671805-37-5.jpg?t=ab-%7B2ab-2%5B3a%26%23178%3Bb-%284ab%26%23178%3B%2B0.5ab%29-6a%26%23178%3Bb%5D%7D-3ab%26%23178%3B+X%3D%E4%B8%89%E5%88%86%E4%B9%8B%E4%BA%8Ca%3D-1+b%3D3%E6%8A%B1%E6%AD%89%E7%9C%8B%E9%94%99%E4%BA%86%E8%BF%98%E6%9C%89%E4%B8%80%E9%A2%98%E5%93%88+%EF%BC%88xy%E5%87%8F%E5%8E%BB%E4%B8%89%E5%88%86%E4%B9%8B%E4%BA%8Cy%E5%87%8F%E5%8E%BB%E4%B8%89%E5%88%86%E4%B9%8B%E4%BA%8C%EF%BC%89%E5%87%8F%E5%8E%BB%EF%BC%88%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%80x+%E5%87%8F%E5%8E%BB%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%80xy%2B1%EF%BC%89X%3D%E4%B8%89%E5%88%86%E4%B9%8B%E4%BA%8C)
ab-{2ab-2[3a²b-(4ab²+0.5ab)-6a²b]}-3ab² X=三分之二a=-1 b=3抱歉看错了还有一题哈 （xy减去三分之二y减去三分之二）减去（二分之一x 减去二分之一xy+1）X=三分之二
ab-{2ab-2[3a²b-(4ab²+0.5ab)-6a²b]}-3ab² X=三分之二
a=-1 b=3
抱歉看错了
还有一题哈
（xy减去三分之二y减去三分之二）减去（二分之一x 减去二分之一xy+1）
X=三分之二
ab-{2ab-2[3a²b-(4ab²+0.5ab)-6a²b]}-3ab² X=三分之二a=-1 b=3抱歉看错了还有一题哈 （xy减去三分之二y减去三分之二）减去（二分之一x 减去二分之一xy+1）X=三分之二
ab-{2ab-2[3a²b-(4ab²+0.5ab)-6a²b]}-3ab²
=ab-[2ab-2(3a²b-4ab²-0.5ab-6a²b)]-3ab²
=ab-[2ab-2(3a²b-10ab²-0.5ab)]-3ab²
=ab-(2ab-6a²b+2ab²+ab)-3ab²
=ab-(3ab-6a²b+2ab²)-3ab²
=ab-3ab+6a²b-2ab²-3ab²
=-2ab+6a²b-5ab²
ab-{2ab-2[3a²b-(4ab²+0.5ab)-6a²b]}-3ab²
=ab-2ab+2[3a²b-(4ab²+0.5ab)-6a²b]-3ab²
=ab-2ab+6a²b-2(4ab²+0.5ab)-12a²b-3ab²
=ab-2ab+6a²b-8ab²-ab-12a²b-3ab²
=-2ab-6a²b-11ab²
与x无关啊
ab-{2ab-2[3a²b-(4ab²+0.5ab)-6a²b]}-3ab² X=三分之二
=ab-2ab+6a²b-8ab²-ab-6a²b-3ab²
=-2ab-11ab²
=-2*(-1)*3-11*(-1)*3²
=6+33
=39
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ab-{2ab-2[3a²b-(4ab²+0.5ab)-6a²b]}-3ab² X=三分之二
=ab-2ab+6a²b-8ab²-ab-6a²b-3ab²
=-2ab-11ab²
=-2*(-1)*3-11*(-1)*3²
=6+33
=39
（xy减去三分之二y减去三分之二）减去（二分之一x 减去二分之一xy+1） X=三分之二
=xy-2y/3-2/3-x/2+1/2xy-1
=3/2xy-x/2-2y/3-5/3
没有y的值怎么求
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