Video Transcript
Simplify two 𝑠 plus one minus three 𝑠 plus two.
In order to simplify this expression, we need to group or collect the like terms. We need to subtract three 𝑠 from two 𝑠. And we need to subtract positive two from positive one. Two 𝑠 minus three 𝑠 is equal to negative 𝑠 or negative one 𝑠 as two minus three equals negative one. Positive one minus positive two is equal to negative one.
The negative and positive signs that are touching become a negative or subtraction sign. We’re therefore left with positive one minus two. This is equal to negative one. This means that two 𝑠 plus one minus three 𝑠 plus two, simplified, is negative 𝑠 minus one.
