The word is divides the sentence into what should be on the left-hand side and what should be on the right-hand side of the equation.
9=n-7, n=16
Practice makes perfect
We have been given a sentence and we need to translate it into an equation.
9 is the difference of a number n and 7.
Every equation has an equals sign and values or expressions on either side of it. Key phrases, such as is,is equal to, and equals tell us about the placement of the equals sign.
9 is the difference of a numbern and7.
⇕
9 = the difference of a number nand7.
On the right-hand side we have a key phrase: the difference of. This word tell us the operations that will be used in our equation. The difference of indicates subtraction.
the difference of a numbern and 7
n - 7
On the left-hand side, we only have a number 9. Putting these sides together, we have a complete equation.
9 = n - 7
