First subtract to get the numbers on one side and variables on the other. So we’re subtracting 4w from both sides.
-w = -10 + 4 w
-4w - 4w
Now you get after subtracting
-5w = -10
Divide both sides by -5 to cancel out the number in front of w
-5w = -10
___ ____
-5 -5
And then after diving you get
w =2