Answer :
This is really easy.
x-4=8
what it really is asking you is the value of x
Isolate x
take 4 to the other side. not -4 but positive 4
x=12
x-4=8
what it really is asking you is the value of x
Isolate x
take 4 to the other side. not -4 but positive 4
x=12
you have to isolate the variable so you add eight to both sides
x - 8 = 4
+8 +8
now add the other side. remember what is done to one side of the equal sign must be done to the other side.
x = 4 + 8
x = 12