What Divided by 72 Equals 9?
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, when divided by 72, equals 9?
Solving What Divided by 72 Equals 9
Here’s how you would set up this question as an equation:
x
72
=
9
\frac{x}{72} = 9
72 x = 9
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, we can do that by multiplying both sides of the equation by 72, resulting in this equation:
x
=
9
∗
72
x = 9*72
x = 9 ∗ 72
Then we simplify and find our answer:
x
=
648
x = 648
x = 648
So, the answer to the question “What divided by 72 equals 9?” is 648.To prove this, we can take the original problem:
x
72
=
9
\frac{x}{72} = 9
72 x = 9
And insert 648 in the place of x:
648
72
=
9
\frac{648}{72} = 9
72 648 = 9
Because this is true, the answer must be correct.
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 77 equals 57?
97 divided by what equals 98?
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What is 4 divided by 4/8?