解答
解答
求解步骤
Translate the problem into an equation:
流行的例子
if the sum of a number and four is doubled,the result is nine less than the numberif the number of students in a class is 50, how many students are aged 19 years old?a number plus 7 more than the number is 29 what is the numbersome number plus 2the sum of two consecutive even integers is 242 find the two integers