8 Divided by What Equals 78?
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 8 by to equal 78?
Solving 8 Divided by What Equals 78
Here’s how you would set up this question as an equation:
8
x
=
78
\frac{8}{x} = 78
x 8 = 78
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 8:
8
=
78
∗
x
8 = 78*x
8 = 78 ∗ x
Then we can isolate x on the right side of the equation by dividing both sides by 78:
8
78
=
x
\frac{8}{78} = x
78 8 = 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
=
0.103
x = 0.103
x = 0.103
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 67 equals 54?
22 divided by what equals 50?
What is 9/10 divided by 33?
What is 11/20 divided by 13/1?
What is 97 divided by 5/2?