问题
填空题
与a相邻的两个整数a-1与a+1,这三个数之和为120,这三个数分别是______,______,______.
答案
a-1+a+a+1=120,
3a=120,
3a÷3=120÷3,
a=40;
a-1=40-1=39;
a+1=40+1=41;
故答案为:39,40,41.
与a相邻的两个整数a-1与a+1,这三个数之和为120,这三个数分别是______,______,______.
a-1+a+a+1=120,
3a=120,
3a÷3=120÷3,
a=40;
a-1=40-1=39;
a+1=40+1=41;
故答案为:39,40,41.