yego.me
yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

Writing algebraic subtraction expressions | 6th grade | Khan Academy

less than 1m read
·Nov 10, 2024

We have different statements here that can each be expressed as an algebraic expression. As you might have guessed, I would love you to pause this video and try to write each of these statements as an algebraic expression before we do it together.

All right, now let's work on it together. So this first statement we have: "2 less than x." My brain thinks, all right, let me start with x. How am I going to get 2 less than that? Well, I'm going to subtract 2.

This is an interesting example because you see the order that we see it in the sentence is not the order that we would necessarily write it in the expression. Right over here, it’s very important to think about what is going on here: what is being described?

Now, this next statement: "y fewer than three." Well, in my mind, I'm going to start with three, and I'm going to be y fewer than that. So, I'm going to start with 3 and then I'm going to be y fewer than that.

Now, these first two statements are similar in that you have something less than something else or something fewer than something else. They just swapped the number and the variable.

Now, this third statement: "x decreased by five." So, my mind is thinking, what am I starting with? I'm starting with an x, and I'm decreasing it by five. So, I could view that as minus 5, or I'm going to take a 5 away from it.

How I Bought A Tesla Roadster For $6,000
The Shadow Of Toxic Positivity

More Articles

View All
The Ponzi Factor: Trailer Part 2 (Unfinished)
In reality, the stock market is a massive system that shuffles money between investors. It is a system where current investors’ profits are directly dependent on the inflow of money from new investors. Such a system is also known as a Ponzi scheme. But wh…
Atomic radii trends | Atomic models and periodicity | High school chemistry | Khan Academy
As we continue into our journey of chemistry, we’re going to gain more and more appreciation for the periodic table of elements. We’re going to realize that it gives us all sorts of insights about how different elements relate to each other. We’re going t…
Prepositions of neither space nor time | The parts of speech | Grammar | Khan Academy
Hey Garans, we’ve talked about prepositions of time, and we’ve talked about prepositions of space. I couldn’t come up with a name for these because the following five prepositions are examples of what we would call prepositions that have connotations for …
Determining if a function is invertible | Mathematics III | High School Math | Khan Academy
[Voiceover] “F is a finite function whose domain is the letters a to e. The following table lists the output for each input in f’s domain.” So if x is equal to a, then if we input a into our function, then we output -6. f of a is -6. We input b, we get …
Worked example: coefficient in Taylor polynomial | Series | AP Calculus BC | Khan Academy
Given an f of x, and they say, what is the coefficient for the term containing x plus 2 to the 4th power in the Taylor polynomial centered at x equals negative 2? So, like always, take a see if you can take a stab at this video on your own before we work…
Direction of reversible reactions | Equilibrium | AP Chemistry | Khan Academy
As an example of a reversible reaction, let’s look at the hypothetical reaction where diatomic gas X₂ turns into its individual atoms, X. It would turn into two of them, so X₂ goes to 2X. The forward reaction is X₂ turning into 2X, and the reverse reactio…