we can write the equation (-x+3)-(x-5) as 1(-x+3)-1(x-5)
= 1(-x+3)-1(x-5)
then we use the distributive property
=1(-x+3)-1(x-5)
= -1x+3-1x+5
then we get the x numbers to one side and the numbers without x to one side.
= -1x-1x+5+3
then we add them( for adding -1x-1x we use the rules for adding numbers negative number then there are two negative like -1x-1x we add them when you add them when the answer comes the answer will be negative )