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Yes no, maybe, I don't know
im not completely sure. i think so but i may be wrong
One does not simply swap the fractions whenever he or she feels like it!
you could swap it to: -57y/50+20y/40 though
What is 20y/40 - 57y/40?
addition is commutative, but subtraction is not.
@headge - Do you understand negative numbers? So, in this example it's okay for the answer to be less than zero, or rewrite it as @Agent47 has done.
Why is the 57y now over 50?
To answer your question, you need to simplify the issue. You need to put y/40 outside the brackets and the remaining numbers inside the brackets. Then you will see that 20-57 is definitely not the same value as 57-20
Be arsed douing that!
Mark you look like billy corgan. So I will write the question out in full
Now *that's* an excellent example there @MarkRijckenberg @headge - I'd be careful about how I interact with the people who are helping you, ok? Now, what part of this problem don't you understand? Did Mark's example help?
Y/2 - 5y/8 + 4y/5 = 20y/40 - 25y/40 + 32y/40 = 20y/40 - 57y/40 Then I got stuck. What do you mean? What have I said that is rude?
Hmm, so now I'm confused. Are you supposed to solve for y in this problem? In terms of your original question, are you able to do that part? 20 - 57 = ?
Write is as a single fraction
And I've not been rude to Mark
Ok, understood. So, are you able to subtract 20y from 57y? An easier way to think of it is by adding a negative, as @Agent47 did. So, -57 + 20 = ? (this answer will be a negative number FYI)
So it could be 37y/40?
There she goes, there she goes again. She calls my name!
Hehe, sorry, connection issues. But yes, you got it! It's -37y/40 :)
I didn't know you were able to get a -y thing!
Alright I'll give you best response
I disagree: Y/2 - 5y/8 + 4y/5 = 20y/40 - 25y/40 + 32y/40 = -5y/40 + 32y/40 = 27y/40