Решите 3 7/8*4/5-1 58*4/5

Question

Решите 3 7/8*4/5-1 58*4/5

Answer 1

(3 7/8)*4/5-(1 5/8)*4/5=4/5(31/8-13/8)= 4/5*(18/8)=(4*18)/(5*8)=18/10=1 4/5=1,8.