Q: What is 40 increased by twice a number?

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20+2x

40

6

49+2x

There is no selected number so it would be a variable. The answer is 2n-9 (n is the number which you choose)

Related questions

20+2x

40

6

15

49+2x

2X + 3

There are two possible (and different) answers: 2x + 3y = 12 or 2*(x + 3y)= 12 The first one is (twice a number) increased by (three times another) The second is twice (a number increased by (three times another)).

18

There is no selected number so it would be a variable. The answer is 2n-9 (n is the number which you choose)

Let the number be x and so the expression is: 2x+3

16

2x+15