Respuesta :
X=8
to get X alone you subtract 12 on the right of the = sign which gets you X=20 but to balance it you subtract 12 from 20 which is 8 so in the end you get X=8.
X=8
to get X alone you subtract 12 on the right of the = sign which gets you X=20 but to balance it you subtract 12 from 20 which is 8 so in the end you get X=8.