综上所述:in conclusion,overall
设xxx为xxx:we set xxx as xxx,assume xxx as xxx
计算得到xxxx:from the calculation/formula/equation we get xxxx,the result we get from the calculation/formula/equation is xxxx 这里面calculation/formula/equation三选一 随便
代入xxx到算式:we substitute xxx into the calculation/formula/equation(三选一)
联立xx和xx...= = 是指联系他们俩的关系吗 综上所述:in conclusion,overall
设xxx为xxx:we set xxx as xxx,assume xxx as xxx
计算得到xxxx:from the calculation/formula/equation we get xxxx,the result we get from the calculation/formula/equation is xxxx 这里面calculation/formula/equation三选一 随便
代入xxx到算式:we substitute xxx into the calculation/formula/equation(三选一)
联立xx和xx...= = 是指联系他们俩的关系吗