2 целых 2/5 -(1/ 4+7/10)

Question

2 целых 2/5 -(1/ 4+7/10)

Answer 1

2 целых2/5-( 5/20+14/20)= 2 целых 2/5 - 19/20= 12/5-19/20=48/20-19/20=29/20=1 целая 9/20

Answer 2

1) 1/4+7/10=12/20=3/5 2) 2целых2/5-3/5=12/5-3/5=9/5=1целая4/5.