So I'm gonna remove a Y, I'm gonna remove Y mass from both sides. Now what will that look like algebraically?

let's subtract it.

So 3 times 4 is 12.

So to get rid of it, we're going to subtract 16 from both sides of this equation.

If we want to get rid of this 2 here on the left hand side, we could subtract 2 from both sides.

let me just rewrite 20 minus 7y is equal to 6y minus 6.

2 x's from the left.

This is 146 is equal to 180.

So let's get rid of this 3x from the right.

And now we can subtract 2x from both sides.

Now what we can do to solve all of these?

And then we can solve each of these.

Let me solve all of these simultaneously.

But 42 is the same thing as 40 2.

And the best way to do that, we can subtract 22 from both sides.

Can you quote a line of Hamlet?

So I want to get rid of this 2x right over here.

How much of a discount can you give?

So we don't want this 6x here, so maybe we subtract 6x from both sides.

So if I subtract, that's minus 18, if I subtract 18 from the right hand side, I also have to do it from the left hand side.

So we get minus y squared over 4.

And then there'd be 30 because every time we're picking a card, were using it up.

If Subtraction is Left Associative, then we want to put as many of these parentheses as far to the left as possible.

We'll allow a 5 percent discount off list prices.

I just have the minus six here, it's just a negative six now.

That's what we did here.

So this is my equity.

If we want the equality to still hold, anything we do to the left hand side of this equation we have to do to the right side of the equation.

Similarly you do the same for C.

Then we only have 29 to pick from.

So first lets add all the y terms

So if we start at 5 let me use a different color we start at 5 right here and we're going to go to the left 12 because we're subtracting 12

And then minus this negative 2.

(Laughter)

Can you help me when I move?

You have two medications you didn't try out yet. What do you do?

This is the American Hour, continuing our programme of musical selections.

And the rest of the problem was 2 plus this thing, which is 77, minus this thing.

I'll get 1 is less than or equal to 3X

I subtracted 3X from here

I just swapped them.

I'm bothered since the strap of my backpack tore.

We also have to change the value of n to keep reducing n as we go.

So what's the velocity of B?

And now we just solve for x.