At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
well, let me copy the first problem down here for us to work on |dw:1440351722236:dw|
first thing I can see do do straight away is to simplify the first fraction by cancelling out those 3's |dw:1440351817587:dw|
next step is to take a look at our denominators: x (x+4) and 7x the LCD of these is just x(x+4)(7x) so we want to multiply both sides by x(x+4)(7x)
then we cancel out terms when we can |dw:1440351945962:dw|
im writing this down so i remember XD
then just solve?
yup, can you take it from here?
i got 0,3
gimme a sec
ok, so I agree that you get x = 0 and x = 3 when you solve; however, one of these is an extraneous solution notice what happens when you plug in x = 0 back into the equation
Yeah 0 is extraneous so its B
yup, great work
ready for the next one?
yep. Thank you for doing this btw
ok, so we have (7/8) - (1/x) = (3/4) let's start by subtracting (3/4) from each side
what would you subtract 3/4 from?
well, the left side is (7/8) - (1/x) and the right side is (3/4) so, let's start by subtracting (3/4) from the left side (7/8) - (1/x) - (3/4) = ?
i got 8?
yes, x = 8
k hold on a sec
can you check one for me?
k let me snip it
just a sec
lol i just got mentioned
yeah I agree, x = 8