[CHALLENGE] Order of Operations

[eddy2017]

That doesn't change anything.

The entire numerator
(m(x+1)+ n(y-1))/(x-y)

 

[BigBeachBanana]

Correct. Now, can you correct the last one?

 

[eddy2017]

The entire numerator
So I need to add more parentheses to the numerator

(m(x+1)+ n(y-1))/(x-y)

 

[eddy2017]

Sorry, I repeated the post.

 

[eddy2017]

Correct. Now, can you correct the last one?

7-----(x(m-1)/(x-y)+ k(m-1)+10))/(p-q)

 

[eddy2017]

I want the 10 to be divided by
(p-q)too.

 

[BigBeachBanana]

7-----(x(m-1)/(x-y)+ k(m-1)+10))/(p-q)

Not quite. Do you also want x(m-1)/(x-y) divided by (p-q)?
Q7)$$\frac{x(m-1)}{x-y}+\frac{k(m-1)+10}{p-q}$$

 

[eddy2017]

Oh, no. I did not notice.
x(m-1)/(x-y)+( k(m-1)+10))/(p-q)

 

[BigBeachBanana]

Oh, no. I did not notice.
x(m-1)/(x-y)+( k(m-1)+10))/(p-q)

Correct. How about this one?
$$\dfrac{2}{\frac{1}{y}+1}-\dfrac{x^2+5}{\left(\frac{1}{y}+\frac{x(m-1)}{\frac{x}{y}}\right)x^2}$$

 

[eddy2017]

I'll do it on my desktop. It is too uncomfortable on the cell. That is a good one

 

[eddy2017]

(2/(1/y +1)) - (x^2 +5)

These are the parentheses I would add. The denominator of the second fraction remains intact.

 

[Steven G]

$$y1+12−(y1+yxx(m−1))x2x2+5$$

??????? To be honest, this is real sad looking.

x2x2 = 4x^2. If you meant, but did not write, x^2*x^2 = x^4
yxx=yx^2
What is y1?

 

[eddy2017]

??????? To be honest, this is real sad looking.

x2x2 = 4x^2. If you meant, but did not write, x^2*x^2 = x^4
yxx=yx^2
What is y1?

No, that was trying to copy from an online editor into our forum page. Visibly, a botched attempt.

 

[BigBeachBanana]

(2/(1/y +1)) - (x^2 +5)

These are the parentheses I would add. The denominator of the second fraction remains intact.

Where's the rest of the question?

 

[Deleted member 4993]

That doesn't change anything. I'' repeat the hint again: Ask yourself, do you just want n(y-1) or do you want the entire numerator divided by (x-y)?

IMO, that is what happens when people start to use smart phones.

They put their smart s in their pocket.

 

[BigBeachBanana]

IMO, that is what happens when people start to use smart phones.

They put their smart s in their pocket.

The word "smart" is an adjective is describes the phone, not necessary the user.

 

[Deleted member 4993]

The word "smart" is an adjective is describes the phone, not necessary the user.

Correct

Before they buy that phone - they had smarts where it was useful (in their head).

After the purchase of phone - all the smarts crawled into the phone. Left the head empty .....