问题
填空题
从10201减去78,连续减了______次,结果是61.
答案
设连续减了x次,
10201-78x=61,
10201-78x+78x=61+78x,
10201-61=61+78x-61,
10140÷78=78x÷78,
x=130;
故答案为:130.
从10201减去78,连续减了______次,结果是61.
设连续减了x次,
10201-78x=61,
10201-78x+78x=61+78x,
10201-61=61+78x-61,
10140÷78=78x÷78,
x=130;
故答案为:130.