KE8717504
what number mulitplied by the numerator and added to the denominator of 4/9 makes the resulting fraction equilavent to 7/4?? the number is?
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KE8717504
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@ArkGoLucky
ArkGoLucky
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um I don't think this is possible because the numerator of the first fraction is not changed so it can't equal the second fraction. ever
ArkGoLucky
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4 does not equal 7
KE8717504
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it dosent' have a answer box for not a answer
KE8717504
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@jim_thompson5910
KE8717504
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I have no idea either
ArkGoLucky
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oh wait nvm, there is an answer. The number just has to be a fraction
KE8717504
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ok.
ArkGoLucky
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Is there a box for a fraction?
KE8717504
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yea
ArkGoLucky
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okay cool
KE8717504
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do u know it? lol
ArkGoLucky
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okay got
ArkGoLucky
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it
ArkGoLucky
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so here's what you do
so make an equation
say x is the number you're looking for
try to think of a way you can make an equation using x
ArkGoLucky
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ask if you need help
ArkGoLucky
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I'll give you a hint
use 4x
KE8717504
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ok so what do i do now with the 4x?
KE8717504
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is the answer going to be 2? @ArkGoLucky
ArkGoLucky
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not quite. I'll just show you the equation. So you know that the number x, when multiplied by the numerator(4) then added to the denominator(9) equals 7/4
That means 4/9+4x=7/4
KE8717504
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so 7/4 is the answer or do i solve that?
ArkGoLucky
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no, now you solve for x, which is the number you're looking for
KE8717504
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i got 47/144?
KE8717504
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is that right or wrong?
ArkGoLucky
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almost
ArkGoLucky
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the numerator is right except it's a negative and the denominator is wrong
KE8717504
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how did i get the denominator wrong?
ArkGoLucky
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did you solve x in\[\frac{ 4 }{ 9+4x }=\frac{ 7 }{ 4 }\]
KE8717504
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yea and i got that big fraction
ArkGoLucky
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try plugging in your answer into that equation
ArkGoLucky
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okay I'll show you how to solve for x
multiply both sides of the equation by the common denominator. In this case, it is (4)(9+4x)
this is to rid of the fractions
ArkGoLucky
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when you do this, you get 16=7(9+4x)
I'm sure you can solve for x now