Can you please help me with this question. I do not understand. :(

thank you so much.

**If a, b, and c are integer variables, some of these expressions are valid C++ and others are
not. For each expression, add parentheses to indicate the precedence and associative rules,
and hence decide which are valid and which are not. In each case, briefly explain in words the
meaning of the valid expressions, or why the expression is not valid.
a == b = c;
a = b == c;
a == b == c;**