7 Divided by What Equals 80?
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 7 by to equal 80?
Solving 7 Divided by What Equals 80
Here’s how you would set up this question as an equation:
7
x
=
80
\frac{7}{x} = 80
x 7 = 80
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 7:
7
=
80
∗
x
7 = 80*x
7 = 80 ∗ x
Then we can isolate x on the right side of the equation by dividing both sides by 80:
7
80
=
x
\frac{7}{80} = x
80 7 = 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
=
0.087
x = 0.087
x = 0.087
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 41 equals 63?
12 divided by what equals 25?
What is 13/6 divided by 47?
What is 11/19 divided by 18/8?
What is 60 divided by 15/9?