Question

1) 5m-(3m+5) +(2m+4)=
2) -5(-4+y) +8(y+3) =
3) 3,2×(-6) -7,8:(8,8-10,1) =

Answer 1

1) = 5m-3m-5+2m+4 = 4m -1
2) = 20-5y+8y+24= 3y +44