### Home > A2C > Chapter 1 > Lesson 1.2.1 > Problem 1-77

1-77.

Find the error in the solution below. Describe the error and solve the equation correctly.

Is the second equation equivalent to the first? Check the order of operations.

The multiplication has to be done before the subtraction.

If you got

Now find your own mistake. Check your distributing. If you got something else, see if it makes the equation true.