甲数比乙数的2倍多l5,乙数是30,甲、乙两数的和是_.
问题描述:
甲数比乙数的2倍多l5,乙数是30,甲、乙两数的和是______.
答
(30×2+15)+30
=(60+15)+30
=75+30
=105
答:甲、乙两数的和是105.
故答案为:105.