Question

4/13*(6,5n-3 1/4m)-3,2*(5/8n-0,5m)
Опишите решение!

Answer 1

1) 6,5n - 3 1/4m = 13/2n - 13/4m
2) 4/13•( 13/2n - 13/4m ) = 2n - m
3) 5/8n - 0,5m = 5/8n - 1/2m
4) 3,2 = 16/5
5) 16/5•( 5/8n - 1/2m ) = 2n - 16/10m = 2n - 1,6m
6) 2n - m - ( 2n - 1,6m ) = 2n - m - 2n + 1,6m = 0,6m
Ответ 0,6m