Complete the equation. $7 \times 3 = 3 \times \Box$ https://cdn.kastatic.org/ka-perseus-graphie/02b1b26aeb58694159c60cb71104675f9325cf27.svg Hint #1: $7 \times 3$ is equal to $7$ groups of $3$. Hint #2: $7$ groups of $3$ has the same total as $3$ groups of $7$. https://cdn.kastatic.org/ka-perseus-graphie/df8ec57db7c8c64bdf5e6c5fbfb78892a6ff58ee.svg Hint #3: $7 \times 3 = 3 \times 7$