There is 10 fish in a fish tank and 5 of them drowned how many fish are there?

There are 10 fish and 5 are taken away, that means that the sum we have to do is:

10 - 5

So, 10 - 5 ≈ 5

So there are 5 fish left in the tank.

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.