7,8*1,3+7,8*1,5+7,2*7,8

Question

7,8*1,3+7,8*1,5+7,2*7,8

Answer 1

7,8*(1,3+1,5+7,2)=7,8*10=78               ***************

Answer 2

10,14+11,7+56,16=78.Очень просто!!!