57 Divided by What Equals 18?
Methods
Setting up the problem:
In a problem like this, the “what” means that we’re working with a variable. The most common variable used in math is “x”. So we could say what number, x can we divide 57 by to equal 18?
Solving 57 Divided by What Equals 18
Here’s how you would set up this question as an equation:
57
x
=
18
\frac{57}{x} = 18
x 57 = 18
The goal of the problem is to solve for x. To do this we need to change the equation so that x is alone on one side of the equation.In this case, it can be done in two steps. The first step is to multiply both sides by x to isolate 57:
57
=
18
∗
x
57 = 18*x
57 = 18 ∗ x
Then we can isolate x on the right side of the equation by dividing both sides by 18:
57
18
=
x
\frac{57}{18} = x
18 57 = x
When we simplify the new equation, we can solve for x. In this example, we will round to the nearest three decimal places if that’s needed.
x
=
3.167
x = 3.167
x = 3.167
Practice Other Division Problems Like This One
If this problem was a little difficult or you want to practice your skills on another one, give it a go on any one of these too!
What divided by 17 equals 79?
7 divided by what equals 70?
What is 10/8 divided by 81?
What is 5/4 divided by 14/12?
What is 2 divided by 15/16?