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Q: What does evaluate 2x for each value of x mean?

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It depends on the value of x. The x is a variable. To evaluate an expression, you need to have a value (number) to replace the x.

If you mean 2x = 28 then the value of x is 14

If you mean: 4 = 2x then the value of x = 2

Do you mean "what is the value of x when 3x - 2x = 15?" in that case, the value of x is 15

If you mean: 2x-0.04 =1.24 then the value of x works out as 0.64

It is 2x + 5. The value of this expression will depend on the value of x: each different value of x will give a different value for the expression.

If you mean: -2x = -4 then the value of x is 2

If you mean the value of 15-2x when x is 2 then it is: 15-4 = 11

2x - 4 = 12Add 4 to each side:2x = 16Divide each side by 2:x = 8

2x-57 degrees = -55

If you mean: x-3 = 2x-8 then the value of x works out as 5

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