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Q: What is the algebraic expression for twice the number,x, increased by 15?

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2x+3

The algebraic expression is 2m+6

2n

It is simply: 2x

2b

2z

(10)(2x)

3 x 2 = 6

If you mean 2n+4, or 2n-4, that already is an algebraic expression. The idea might be to put it into words. 2n+4 is twice n, increased by 4. Notice you need a comma because if you write twice n increased by 4 this is 2(n+4)

(2x)+3

p+2d

2X-6

2w - 10

As an algebraic expression it is: 2x-9

eight less than twice a number

2xt2

2x-3

2(n+7)

3>2x

2x = 76 x = 38

As an algebraic expression it is: 2x+4

The corresponding expression would be 2x - 6 = 4.

2x + w = -w

If ' x ' is your number, then the quotient is 2x/6.

The algebraic expression for three more than a number is: X + 3