(5,75-6,9)-(1/4+1/10)

Question

(5,75-6,9)-(1/4+1/10)

Answer 1

1) ( 5,75-6,9)-(1/4+1/10)= (-1,15)-(5/20+2/20)=(-1 15/100) - 7/20=(-1 3/20)-7/20= -1 10/20= - 1 1/2 = -1,5.

Answer 2

1)5,75-6,9=-1,15   2)1/4+1\10=7/20   3)-1,15-(7/20=-1 3/20-7/20=-4/5=-0,8