Question

I think of a number double it and subtract two I get nine

Answer 1

Final Answer:

The number which is doubled and then two is subtracted from it to get nine, is $\frac{11}{2}$.

Given:

To think of any number, then double it and then subtract two to from it to get nine.

To Find:

The number which is to be doubled and then two is subtracted from it to get nine.

Explanation:

The mathematical operations of addition, subtraction, multiplication, division and exponentiation can be carried out on any number in the number line.

Step 1 of 3

Assume that the number which is doubled and then two is subtracted from it to get nine, is $x$.

The number $x$ which is doubled is

$=2x$

Step 2 of 3

The number $x$ which is doubled and then two is subtracted from it, is

$=2x-2$

Step 3 of 3

The number $x$ which is doubled and then two is subtracted from it to get nine, is represented by the following equation which solved for getting the number.

$2x-2=9\\2x=9+2\\2x=11\\x=\frac{11}{2}$

Therefore, the required number which is doubled and then two is subtracted from it to get nine, is $\frac{11}{2}$.

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