What does the equal sign in an equation signify?

• The expression on the left is greater.

• The expressions on both sides have the same value.

• The expressions on both sides are different.

• The expression on the right is greater.

How can you determine if an equation is false?

• Both sides have the same value.

• One side is a number and the other is a letter.

• The expressions on both sides are not equal.

• The equation has no equal sign.

Which of the following equations is true?

• 50 / 5 = 10

• 18 - 18 = 1

• 16 - 4 = 10

• 80 / 8 = 9