**Answer:**

**Equivalent expression for n x a = a+ a+a+a....n times**

**Step-by-step explanation:**

Given: Expression for n x a .

To find : Write an equivalent expression for n x a using only addition.

Solution : We have given that n x a .

Here, we can say Sum of a is n times.

We can rewrite it n x a = a+ a+a+a....n times.

Example : 3 x 2 = 2 +2+ 2.

6 = 6 ( true)

**Therefore , equivalent expression for n x a = a+ a+a+a....n times.**