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Q: What is the correct way to write 15 decreased by twice a number in algebraic expression?

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If x is the unknown variable then it can be: x-16

n (number) minus four ----->n-4

Let x be the number and so it is: 3x-18

n = number 2(n + 15) ======

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Here is the correct defenition: Algebraic Expression is an expression which is obtained by performing a finite number of the following operations on symbols representing numbers: addition, subtraction, multiplication, division, raising to a power.

a common factor

p+0.4-(p+0.4)5 i think

2n

The question is ambiguous so the answer is one of:3/n - 5 or 3/(n-5)

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If you call your number x, the expression would be 5x.

Let the number be x and so the expression is 8x

Yes it can

37n