91 Divided by What Equals 19?
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 91 by to equal 19?
Solving 91 Divided by What Equals 19
Here’s how you would set up this question as an equation:
91
x
=
19
\frac{91}{x} = 19
x 91 = 19
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 91:
91
=
19
∗
x
91 = 19*x
91 = 19 ∗ x
Then we can isolate x on the right side of the equation by dividing both sides by 19:
91
19
=
x
\frac{91}{19} = x
19 91 = 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
=
4.789
x = 4.789
x = 4.789
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 82 equals 42?
17 divided by what equals 83?
What is 4/14 divided by 3?
What is 15/19 divided by 10/11?
What is 67 divided by 17/20?