两个数字的差别为3和总数为31?
我们得到了两个数字的区别为3和总和为31的数字.让这些数字是x和y.我们可以从这个信息中写出两个方程: - x + y = 31 (因为两个数字的总和是31) - x - y = 3 (因为两个数字的区别是3) 我们想找到这两个数字中最大的数字 (即具有更大的值的数字).为了做到这一点,我们可以在第二个方程中解决x,并将其置于第一方程中: - x - y = 3 x = y + 3 - x + y = 31 (y + 3) + y = 31 => 2y + 3 = 31 - 2y = 28 => y = 14 所以我们发现y是14.为了得到x,我们可以将这个值置于第一个方程中: x + y = 31 => x + 14 => x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x