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# I'm confused on how to do these PLEASE HELP

-1
101
1

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

#1
+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
+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

geno3141 Mar 2, 2020