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Q: A number x increased by 5 and then tripled?

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3(x+8)

A number tripled is a number multiplied by 3. For the variable x, x tripled would be 3x.

Ummm... I really don't know what you are trying to ask with this question so I will answer your question with variables. An unknown number tripled is 3x So you can substitute any number for x and it will be tripled. For example: if x=2, then the answer would be 6, which is tripled from 2.

X-5^2

15

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3(x+8)

A number tripled is a number multiplied by 3. For the variable x, x tripled would be 3x.

You will have 3(x + 5) or 3x + 15

Ummm... I really don't know what you are trying to ask with this question so I will answer your question with variables. An unknown number tripled is 3x So you can substitute any number for x and it will be tripled. For example: if x=2, then the answer would be 6, which is tripled from 2.

X-5^2

let x be the number, then: (x + 1) × 2 + 5 = x + 1 → 2x + 2 + 5 = x + 1 → 2x + 7 = x + 1 → 2x - x = 1 - 7 → x = -6 The number is -6. Checking: -6 +1 = -5; 5 × 2 = -10; -10 + 5 = -5 which is the same as -6 + 1 = -5.

28

x + 5

15

x+8+x/5 = 20 x = 10

x-4=8+x/5 5(x-4)=5(8+x/5) 5x-20=8+x 4x=28 x=7

23 + 2X = 5 2X = -18 X = -9