Eighteen and nine tenths is 2.6 less than a number. Find the number

To find the number that is 2.6 more than eighteen and nine tenths, we need to add 2.6 to it.

Thus, the number is: 18.9 + 2.6 = 21.5

Let's represent the unknown number as "x".

According to the given information, eighteen and nine tenths is 2.6 less than x.

So we can write the equation as:

18.9 = x - 2.6

To find the value of x, we need to isolate it on one side of the equation:

x = 18.9 + 2.6

Simplifying the equation:

x = 21.5

Therefore, the number is 21.5.

To find the number, we can set up an equation. Let's assume the number is represented by the variable x.

According to the given information, "Eighteen and nine tenths is 2.6 less than a number," we can translate it into the following equation:

18.9 = x - 2.6

To find the value of the number x, we can solve this equation by isolating x on one side. Add 2.6 to both sides of the equation:

18.9 + 2.6 = x - 2.6 + 2.6
21.5 = x

Therefore, the number is 21.5.