4 Divided by What Equals 85?
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 4 by to equal 85?
Solving 4 Divided by What Equals 85
Here’s how you would set up this question as an equation:
4
x
=
85
\frac{4}{x} = 85
x 4 = 85
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 4:
4
=
85
∗
x
4 = 85*x
4 = 85 ∗ x
Then we can isolate x on the right side of the equation by dividing both sides by 85:
4
85
=
x
\frac{4}{85} = x
85 4 = 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
=
0.047
x = 0.047
x = 0.047
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 14 equals 73?
81 divided by what equals 62?
What is 11/16 divided by 89?
What is 19/1 divided by 14/2?
What is 71 divided by 20/3?