Question

Найди значения выражений 9-2-6 90-20-60

Answer 1

9-2-6=1
90-20-60=10 .....................

Answer 2

1) 9-2=7; 7-6=1; 9-2-6=1
2) 90-20=70; 70-60=10; 90-20-60=10

Answer 3

9-2-6 = 1

90-20-60 = 10