x + 2 = 4
x = 4 - 2
therefore:
x = 2
If 2+x = -4
then x=-6
4
4
2x-4
x=7 3/4
If x/2 +3 = 4 then x = 2
x/(x + 4) = 4/(x + 4) + 2 (x - 4)/(x + 4) = 2 x - 4 = 2x + 8 -x = 12 x = -12
4
2x-4
4
x=27
x=7 3/4
x=2
If x/2 +3 = 4 then x = 2
x/(x + 4) = 4/(x + 4) + 2 (x - 4)/(x + 4) = 2 x - 4 = 2x + 8 -x = 12 x = -12
4
4 + x = 2x --> 4 = 2x - x --> 4 = x: x = 4
6
2x = 4 x = 2 Try it out