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Q: Twice a number plus one is equal to fifty-three. What is the number?

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A + 2a = 3a

2x+x=3x

n + 2n = 3n

twice a number n is 2n plus 3 is + 3 → twice a number n plus 3 is 2n + 3.

The reciprocal of a number plus the reciprocal of twice the number equals Find the number. 1/2 find the number

2x + 27, where x is your number

a minus and a plus equal a minus number yeh dude

-30

An odd number plus an even number will always be an odd number.

31 Because, twice 31 is 62. And, 62 plus 13 is 75.

2x + 27

A negative number.

Mass Number.

5

2x+4y

(-4) + (+8) is +4

Assuming the hydrocarbon is saturated the formula would be C21H44 In a saturated hydrocarbon the number of hydrogen atoms is equal to twice the number of carbon atoms, plus two.

Yes

No, never.

The number of protons + electrons are equal. The number of protons + neutrons equal the mass number

Not necessarily. A negative number plus a positive number can be negative, zero or positive.

2x + 2 > x + 5

3 times 3 = 9 plus the number 3 = 12.

The number of neutrons plus the number of protons.

Always.