Answer:
impossible, but two ways:
either:
x=16/7
or:
7x+8
Step-by-step explanation:
if it is 7x-4+12, then it is 7x+8 because it is an expression.
If it is 7x-4=12, then it is x=16/7 because it is an equation.
otherwise, it is python programming or impossible.
