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kotykmax [81]
3 years ago
9

What is the simplified form of the quantity of x plus 5, all over the quantity of 9 − the quantity of x plus 4, all over the qua

ntity of x plus 6?
the quantity of x squared plus 20x plus 66, all over 9 times the quantity of x plus 6
the quantity of x squared plus 2x minus 6, all over 9 times the quantity of x plus 6
the quantity of x plus 1, all over the quantity of 3 minus x
the quantity of 1, all over the quantity of 3 minus x
Mathematics
1 answer:
valina [46]3 years ago
6 0

Answer:

The simplified form is:

\frac{x^2+2x-6}{9(x+6)}

Step-by-step explanation:

We want to simplify

\frac{x+5}{9}-\frac{x+4}{x+6}


The least common denominator is


9(x+6)


We collect LCD to obtain,

\frac{(x+5)(x+6)-9(x+4)}{9(x+6)}


Next, we expand brackets to obtain,

\frac{x^2+6x+5x+30-9x-36}{9(x+6)}


We group like terms to get,

\frac{x^2+6x+5x-9x+30-36}{9(x+6)}


This simplifies to,

\frac{x^2+2x-6}{9(x+6)}


The correct answer is B.



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Y = -2x + 8 = x - 4
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