Exercise 1 Page 110

Every equation has an $\text{equal}$ $\text{sign}$ and values or expressions on either side of it. Key phrases such as $\text{is},$ $\text{is equal to},$ and $\text{equals}$ tell us about the placement of the equal sign. On the left-hand side, we have two keywords: sum and times. These words tell us the operations that will be used in our equation. Sum indicates addition, while times indicates multiplication. On the right-hand side, the keyword is times. Once again, it tells us to multiply. Putting these sides together, we have a complete equation.