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Simplify each equation.

 

-2u3y    25x3

  -------- - --------

 15xz5  14u2y2

 

Please show work and tell me how to do it, I am very confused and want to get better at these.

 

Thanks for the answer?

 

Please hurry me test is tomorrow

 Mar 2, 2020
edited by Guest  Mar 2, 2020
edited by Guest  Mar 2, 2020

Best Answer 

 #1
avatar+21955 
+1

-2u3y              25x3

-------     -     ---------      =     

15xz5          14u2y2

 

To subtract fractions, you need a common denominator; in this case, the common denominator is found by multiplying both denominators together:

     Denominator of each fraction =  15xz5 · 14u2y2  =  210xz5u2y2  

So, both the numerator and denominator of the first fraction must be multiplied by 14u2y2

     Numerator of the first fraction =  -2u3y · 14u2y2  =   -28u5y3

And, both the numerator and denominator of the second fraction must be multiplied by 15xz5

     Numerator of the second fraction  =  25x3 · 15xz5  =  375x4z5

 

The problem is now:     [ -28u5y3 / 210xz5u2y2  ]  -  [ 375x4z5 / 210xz5u2y2  ]

Combining the two numerators:  -28u5y3 - 375x4z5  over the common denominator:  210xz5u2y2  gives you your answer"

     =     ( -28u5y3 - 375x4z5 ) / 210xz5u2y2 

 Mar 2, 2020
 #1
avatar+21955 
+1
Best Answer

-2u3y              25x3

-------     -     ---------      =     

15xz5          14u2y2

 

To subtract fractions, you need a common denominator; in this case, the common denominator is found by multiplying both denominators together:

     Denominator of each fraction =  15xz5 · 14u2y2  =  210xz5u2y2  

So, both the numerator and denominator of the first fraction must be multiplied by 14u2y2

     Numerator of the first fraction =  -2u3y · 14u2y2  =   -28u5y3

And, both the numerator and denominator of the second fraction must be multiplied by 15xz5

     Numerator of the second fraction  =  25x3 · 15xz5  =  375x4z5

 

The problem is now:     [ -28u5y3 / 210xz5u2y2  ]  -  [ 375x4z5 / 210xz5u2y2  ]

Combining the two numerators:  -28u5y3 - 375x4z5  over the common denominator:  210xz5u2y2  gives you your answer"

     =     ( -28u5y3 - 375x4z5 ) / 210xz5u2y2 

geno3141 Mar 2, 2020

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