86 Divided by What Equals 15?
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 86 by to equal 15?
Solving 86 Divided by What Equals 15
Here’s how you would set up this question as an equation:
86
x
=
15
\frac{86}{x} = 15
x 86 = 15
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 86:
86
=
15
∗
x
86 = 15*x
86 = 15 ∗ x
Then we can isolate x on the right side of the equation by dividing both sides by 15:
86
15
=
x
\frac{86}{15} = x
15 86 = 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
=
5.733
x = 5.733
x = 5.733
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 80 equals 97?
5 divided by what equals 30?
What is 8/1 divided by 93?
What is 12/20 divided by 6/5?
What is 58 divided by 10/3?