2/7 of a number is 6.What is the number?

2/7 x = 6

2x = 42
x = 21

or, you could say,

if 2/7 is 6,
1/7 is 3
so, the number is 21

To find the number, we can set up an equation based on the given information.

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

According to the problem, 2/7 of this unknown number is equal to 6.

We can write this as an equation:

(2/7) * x = 6

To solve for x, we need to isolate it on one side of the equation.

To do this, we can multiply both sides of the equation by the reciprocal of 2/7, which is 7/2 (or you can think of it as multiplying both sides by 7 and then dividing both sides by 2).

By performing the multiplication, we have:

x = (7/2) * 6

Now, multiply 7/2 and 6:

x = 21

Therefore, the number is 21.