Which is TRUE? Responses A 7a + 3b is an equation because it has variables.7a + 3b is an equation because it has variables. B 15a + 5 is an equation because it can be solved.15a + 5 is an equation because it can be solved. C 9a = 20 is an equation because it has an equal sign.9a = 20 is an equation because it has an equal sign. D 6a + b is not an expression because 1/2 is a fraction.
The true statement is:
C) 9a = 20 is an equation because it has an equal sign.