Q: 2X X50. What one number can replace X?

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1/2x+6=1/3x 3x+36=2x 3x=2x-36 x=-36

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.

It is equal to 2x because if you were to replace the "x" with a number say, 2 for example so 2 + 2 would be 4 and 2 times 2 would also be 4 which is what "2x" stands for (2 times x). So then if you had x + x you would get 2x.

9+4x=2x-1 2x=-10 x=-5

Let x = one number. x + 10 is the other one. 2x + 10 = 40 2x = 30 x = 15 x + 10 = 25 15 + 25 = 40

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1/2x+6=1/3x 3x+36=2x 3x=2x-36 x=-36

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.

eigthy one plus a number

2x - 5 = 1Add 5 to each side:2x = 6Divide each side by 2:x = 3

It is equal to 2x because if you were to replace the "x" with a number say, 2 for example so 2 + 2 would be 4 and 2 times 2 would also be 4 which is what "2x" stands for (2 times x). So then if you had x + x you would get 2x.

9+4x=2x-1 2x=-10 x=-5

Let x = one number. x + 10 is the other one. 2x + 10 = 40 2x = 30 x = 15 x + 10 = 25 15 + 25 = 40

X = 7 9x - 2x = 49

The Answer:You are implying that 2x - 9 = 31. Add 9:2x = 40Divide by 2:x = 20Therefore, the number must be 20.

Let 'x' represent "the number": 2x - 7 = -147 Solving: 2x = -140 x = -70

The answer to your question is (2x + 2y)^-1 = 1/(2x + 2y)^1. When you raise a number to a negative power, you can rewrite it by dividing one by the original number with the negative sign dropped from the exponent. Because the power here is 1, you can rewrite the answer again to 1/(2x + 2y) since any number raised to the power of 1 is simply the number itself. You can't add 2x and 2y because they are two different variables.

Let the number be x 12-2x = -7 -2x = -7-12 -2x = -19 x = 9.5