u divided by 7 =3

u/7 = 3

Multiply both sides of the equation by 7. What do you get?

21

Right.

u = 21

To find the value of "u" when it is divided by 7 and equals 3, you can use algebraic equations.

Let's set up the equation:

u / 7 = 3

To isolate the variable "u" on one side of the equation, we need to multiply both sides by 7:

(u / 7) * 7 = 3 * 7

This simplifies to:

u = 21

Therefore, the value of "u" is 21.