Bring like terms together
(REMEMBER CHANGE THE SIGN WHEN MOVING ACROSS THE EQUAL SIGN i.e. - becomes + and + becomes -)
4x - 2x = 7 - 3
2x = 4
divide both sides by 2
x = 2
Answer: option A. The inverse of G(x) is not a function.
Because that means that for some values of x, say x = a and x = b, G(a) = G(b) = Z, then you cannot tell whether the value that generates Z corresponds to a or b.
