Question

Упростите:
1) -0,6*(-5/9)*0,5m*(-1 4/5)

Answer 1

-0,6 * (-5/9) * 0,5m * (-1 4/5) = 
-6/10 * 5/9 * 5/10 * 9/5 * m = 
3/10*m  (или  0,3m)