本题型答题要点
- Write an equation from the words, then solve step by step.
- Check your answer by substituting it back into the original equation.
练习：25题
由AUSLEX原创的讲解和题目，并非College Board官方资料。SAT是College Board的商标。
由AUSLEX原创的讲解和题目，并非College Board官方资料。SAT是College Board的商标。