3 years ago

I need help solving a practice problem

Mathematics

1 answer:

Marrrta [24]3 years ago

4 0

Answer:

17 i think

Step-by-step explanation:

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Add and subtract the rational expressions. 7x+5/x-1 -(8x1/x-1+2x-4/x-1) Which statements are true about the process for adding a

anzhelika [568]

Answer:

2. The denominator of the fully simplified expression will be x – 1.

4. The numerator of the fully simplified expression will be –3x + 10.

Step-by-step explanation:

Given the rational expression

$\dfrac{7x+5}{x-1} -(\dfrac{8x-1}{x-1} +\dfrac{2x-4}{x-1} )$

Let us first simplify before making our deductions.

Opening the brackets

$\dfrac{7x+5}{x-1} -(\dfrac{8x-1}{x-1} +\dfrac{2x-4}{x-1} )=\dfrac{7x+5}{x-1} -\dfrac{8x-1}{x-1} -\dfrac{2x-4}{x-1}$

Taking LCM

$=\dfrac{7x+5-(8x-1)-(2x-4)}{x-1}$

Opening the brackets and simplifying

$=\dfrac{7x+5-8x+1-2x+4}{x-1}\\\text{Collecting like terms in the numerator}\\=\dfrac{7x-8x-2x+5+1+4}{x-1}\\=\dfrac{-3x+10}{x-1}$

The following statements are therefore true:

2. The denominator of the fully simplified expression will be x – 1.

4. The numerator of the fully simplified expression will be –3x + 10.

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3 years ago

What is the equivalent to 28/42

grigory [225]

2/3, since those numbers can be divided by 14.

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3 years ago

What is 345,973 rounded to the nearest hundred

8090 [49]

345973 rounded to the nearest hundred is 346000

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4 years ago

Three rectangular tables are placed end to end to form one long table 7.8 meters long. The lengths of two of the tables are 3.5

WARRIOR [948]

The length of the third smallest table is 1.6 because 7.8 is more than 3.5 and 3.5 is more than 1.6,

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3 years ago

34 ft/min = ft/h please show example I want to know how to do it

Masteriza [31]

You know that there are 60 minutes in one hour, so you multiply 34 x 60.

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4 years ago

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I need help solving a practice problem ​

I need help solving a practice problem