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Lelechka [254]
3 years ago
11

The reciprocal of 5 less than a number is 4 times the reciprocal of twice the number. find the number.

Mathematics
1 answer:
ivolga24 [154]3 years ago
6 0
5 less than the number is x - 5
The reciprocal is 1/(x - 5)

This number is 1/(x - 5) = 4(1/(2x)) Cross multiply.
2x = 4*(x - 5) Remove the brackets.
2x = 4x - 20 Subtract 2x from both sides
0 = 4x - 2x - 20
0 = 2x - 20 Add 20 to both sides
20 = 2x Divide by 2
20/2 = x
10 = x
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7 0
3 years ago
Can some one PLS help me with this problem it will be great x+5&lt;-4
lubasha [3.4K]

Answer:

The answer is <em>x<-9</em>

Step-by-step explanation:

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You move it to the right and you change the sign

This is what I mean: x<-4-5

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Step-by-step explanation:


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