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anonymous
 4 years ago
47/4x=10 Solve the following equation. Please show all work! Have done just want a second opinion
anonymous
 4 years ago
47/4x=10 Solve the following equation. Please show all work! Have done just want a second opinion

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phi
 4 years ago
Best ResponseYou've already chosen the best response.1is the problem \[ 4  \frac{7}{4x} = 10\]

phi
 4 years ago
Best ResponseYou've already chosen the best response.1if so, \[4  \frac{7}{4\cdot 14}=10\] which does not work. if the problem is \[ 4  \frac{7}{4}x=10 \] then with x=14 \[ 4  \frac{7}{4}14=10 \] which also does not work.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I added 4 to both sides

phi
 4 years ago
Best ResponseYou've already chosen the best response.1that is a good start. but which problem is it (see above)?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I subtracted the ricp from it too, I guess I just need to start over again

phi
 4 years ago
Best ResponseYou've already chosen the best response.1Let's do 4  (7/4)x = 10 (the x is up top) then add 4 to both sides (7/4)x= 14 this is what you got, right? to get rid of the 7/4 *multiply* by the reciprocal on both sides of the equation

phi
 4 years ago
Best ResponseYou've already chosen the best response.1can you do \[ \frac{4}{7}\cdot \frac{7}{4}x= 10\cdot \frac{4}{7} \]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0cant cancel can you since the 4 and 7 are oposit of each other

phi
 4 years ago
Best ResponseYou've already chosen the best response.1You can cancel (that is why we are doing it). the order of multiplication does not matter 2*3= 3*2 so \[ \frac{4}{7}\cdot\frac{7}{4} =\frac{7}{7}\cdot\frac{4}{4} = 1\cdot 1= 1\]

phi
 4 years ago
Best ResponseYou've already chosen the best response.1close, but think of the 10* 4/7 as \[ \frac{10}{1}\cdot \frac{4}{7} \] multiply top times top and bottom times bottom

phi
 4 years ago
Best ResponseYou've already chosen the best response.1Let's back up: 4  (7/4)x = 10 then add 4 to both sides (7/4)x = 14 x = 14 * 4/7 can you finish this?

phi
 4 years ago
Best ResponseYou've already chosen the best response.1what happen to the minus sign?

phi
 4 years ago
Best ResponseYou've already chosen the best response.1OK, let's check your answer x= 56/7 you start with 4  (7/4)x = 10 if x is 56/7 then the lefthand side is 4  (7/4)*(56/7) can you do this?

phi
 4 years ago
Best ResponseYou've already chosen the best response.1before you forget notice that it is minus times minus so 7/4 * 56/7 is + (cancel the minus signs) also, you can cancel the 7's

phi
 4 years ago
Best ResponseYou've already chosen the best response.1keep going, you are doing 4  (7/4)*(56/7)

phi
 4 years ago
Best ResponseYou've already chosen the best response.1you found 7/4 * 56/7 = +14 so now 4 + 14 =

phi
 4 years ago
Best ResponseYou've already chosen the best response.1look at it more carefully we are adding

phi
 4 years ago
Best ResponseYou've already chosen the best response.14  (7/4)*(56/7) > 4 + 14

phi
 4 years ago
Best ResponseYou've already chosen the best response.1when you add negative numbers, it's like subtraction.

phi
 4 years ago
Best ResponseYou've already chosen the best response.14 + 14 is the same problem as 14  4

phi
 4 years ago
Best ResponseYou've already chosen the best response.1Here is a 5 minute video that might help http://www.khanacademy.org/video/addingnegativenumbers?playlist=Developmental+Math+2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Thank you it might I hope so thanks for all of your help

phi
 4 years ago
Best ResponseYou've already chosen the best response.1you will get +10 which matches the original 4  (7/4)x = 10 you figured out that when x= 56/7 that the equation turns into 10 = 10 which means you got the right answer.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0With lots of help from you thanks

phi
 4 years ago
Best ResponseYou've already chosen the best response.1If the video helps and is not too boring, then search for the videos on solving equations (use his search window). If something does not make sense, search for a video that explains it, because he explains *everything*

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Thank you I will look at the links wheather they are boring or not I need the info
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