Here it says complete and balance the following reaction. Here we have gallium liquid reacting with steam. Now gallium has a very low melting point. If you were to take solid gallium and put it in your hand, it would actually melt in your hand. That's how low its melting point is. So it's typical for us to find it in its liquid form.
Nevertheless, it's a group 3A metal and we know how it's going to react with water. Based on the example we've seen earlier, we know that it would produce the ionic form of gallium, which is gallium Ga3+ aq. We know that we produce also hydroxide ion and we form hydrogen gas.
We also know that our balance would be 2:6:2:6:3. Again, we're not really focusing on the balancing aspect. What's most important is that you know that gallium of Group 3A metal react with water would create the Ga3+ ion form of that metal plus hydroxide ion and hydrogen gas as products. So that's what's most important here.