Answer :
Any expression has many equivalents. For something like this, it is often convenient just to make use of the distributive property.
= (-1/2)*(-3y) +(-1/2)*(10)
= (3/2)y -5
Another equivalent has a common denominator
= (3y -10)/2
= (-1/2)*(-3y) +(-1/2)*(10)
= (3/2)y -5
Another equivalent has a common denominator
= (3y -10)/2