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.
w-13=15, w=28
Practice makes perfect
We have been given a sentence and we need to translate it into an equation.
13 subtracted from a number w is 15.
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.
13 subtracted from a numberw equals 15.
⇕
13 subtracted from a numberw = 15.
On the left-hand side we have a key phrase: subtracted from. This word tell us the operations that will be used in our equation. Subtracted from indicates subtraction.
13 subtracted from a numberw
w - 13
On the right-hand side, we only have a number 15. Putting these sides together, we have a complete equation.
w - 13 = 15
