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wolverine [178]

3 years ago

10

Sam thought of a natural number, and then he added the next natural number to it. He got the sum of 75. What was Sam’s number?

1 answer:

Aleks [24]3 years ago

5 0

Answer:

37

Step-by-step explanation:

Naturals numbers are 1, 2, 3, 4, 5, ....

The difference in natural numbers are "1".

2 is "1" unit away from 1

3 is "1" unit away from 2

and so on...

So, if we let the unknown natural number be "x", then it follows that the next natural number would be "x + 1".

The question says that Sam added a natural number (let it be x) with the next natural number (that is x + 1) and got 75. So we can write:

x + x + 1 = 75

Now we add like terms and solve for x:

2x + 1 = 75

2x = 75 - 1

2x = 74

x = 74/2

x = 37

So Sam thought of the number 37

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$-20 = -8a + 4b - 2c + d$

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<u /> $28 - 20 = 8a - 8a + 4b + 4b + 2c - 2c + d + d$

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$c = -a + b + (4 - 4b) + 5$

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