20*2+1+3/9=7

Need to add grouping symbols to make it true

(20 * (2+1) + 3) / 9 = 7

Step-by-step explanation:

You can tell that the only way that it can be true is using the division.

63/9 = 7

So I tried to find a way for everything before the grouping symbol to be 63:

(20 * (2+1) + 3) / 9 = 7