There are 60 tons of gasoline in three tanks. In the first tank it is 2 times more than in the second, and in the third it is 16 tons

There are 60 tons of gasoline in three tanks. In the first tank it is 2 times more than in the second, and in the third it is 16 tons less than in the second. How many tons of gasoline are in the second tank.

Let x t gasoline in the second tank.
Then in the first (2 * x) tons of gasoline, and in the third (x-16) tons.
Only 60 tons of gasoline.
We make up equality:
2x + x + (x-16) = 60
2x + x + x-16 = 60
4x = 60 + 16
4x = 76
x = 76/4
x = 19
This means that there are 19 tons of gasoline in the second tank.
Answer: 19t