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natulia [17]
2 years ago
12

Solve for x: 2 over quantity x plus 2 plus 1 over 5 equals 6 over quantity x plus 5.

Mathematics
1 answer:
3241004551 [841]2 years ago
8 0

Answer:

x = 0 and x = 13

Step-by-step explanation:

  • given equation :

\frac{2}{x+2}+\frac{1}{5}=\frac{6}{x+5}

  • solving left part:

\frac{12+x}{5*(x+2)} =\frac{6}{x+5}

  • multiplying both sides by 5:

\frac{12+x}{x+2}=\frac{30}{x+5}

  • by cross multiplying:

x^{2} +17x+60=30x+60

  • subtracting both sides by 60:

x^{2} +17x=30x

  • subtracting both sides by 17x:

x^{2}=13x

  • taking 13x to the other side:

x^{2} -13x=0\\x*(x-13)=0

therefore, solution for x : 0 or 13.

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mash [69]

Answer:

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Step-by-step explanation:

|2x + 3| - 6 =11

Add 6 to each side.

|2x + 3| = 17

Apply the absolute rule: If |x| = a, then x = a or x = -a.

(1) 2x + 3 = 17                    (2) 2x + 3 = -17

Subtract 3 from each side

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Divide each side by 2

          x = 7                                   x = -10

<em>Check: </em>

(1) |2(7) + 3| - 6 = 11                     (2) |2(-10) + 3| - 6 = 11

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              17 - 6 = 11                                        17 - 6 = 11

                    11 = 11                                              11 = 11

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Step-by-step explanation:

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