What is the simplified form of.... (I have a picture to show the example)
you'll want to put the numerator in a single denominator (by LCD)..same with denominator...first
wait what?
1/xy? like that?
well not exactly... let me give a demonstration.. \[\frac ax + \frac by\] first multiply the denominators this gives you xy <--this becomes the denominator then multiply the denominator of the second fraction to the numerator ofthe first fraction <--that gives you ay then multiply the denominator of the first fraction to the numerator of the second fraction <--that gives you bx so \[\frac ax + \frac by \implies \frac{ay + bx}{xy}\] does that make sense?
sorta. so then it becomes x+y/xy?
yup
what about the denominator \[\frac 1y - \frac 1x\]
y-x/yx?
or wouldnt it be xy on the denominator because x goes first? Since its before in alphabetical order?
xy and yx are the same
commutative property ofmultiplication
ohh got it! so how do i finish this? my answer choices are this..
so... the expression becomes \[\Large \frac{\frac{x+y}{xy}}{\frac{y-x}{xy}}\] do you see anything that can be cancelled?
umm yeah the denominators?
So its x+y/y-x?
yup
wait thats not an answer choice :/
y+x/y-x y-x/y+x x-y/x+y x+y/x-y
lol wait.. i saw your mistake...
haha okay
\[\frac 1y - \frac 1x\]this should be \[\frac{x - y}{yx}\]
so the fraction would be \[\Large \implies \frac{\frac{x+y}{xy}}{\frac{x-y}{xy}}\]
ohh! I reversed them!
x+y/x-y?
yes
thankyou so much!
welcome
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