Write an equation to find the unknown number use a variable for the unknown
i do not understand this question..a large aquarium has 6 more fish then a small aquarium. there are 19 fishes in a large aquarium. how many fishes are in a small aquarium.

The required equation :

There are 13 fishes in small aquarium.

Step-by-step explanation:

Let the number of fishes in small aquarium be x.

Given : A large aquarium has 6 more fish then a small aquarium.

There are 19 fishes in a large aquarium.

Then, the equation to find the number of fishes in small aquarium (x) is given by:_

To solve the above equation, subtract 6 from each sides , we get

Hence, there are 13 fishes in small aquarium.

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign