What Divided by 15 Equals 5?
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 15, equals 5?
Solving What Divided by 15 Equals 5
Here’s how you would set up this question as an equation:
x
15
=
5
\frac{x}{15} = 5
15 x = 5
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 15, resulting in this equation:
x
=
5
∗
15
x = 5*15
x = 5 ∗ 15
Then we simplify and find our answer:
x
=
75
x = 75
x = 75
So, the answer to the question “What divided by 15 equals 5?” is 75.To prove this, we can take the original problem:
x
15
=
5
\frac{x}{15} = 5
15 x = 5
And insert 75 in the place of x:
75
15
=
5
\frac{75}{15} = 5
15 75 = 5
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 70 equals 99?
51 divided by what equals 34?
What is 16/4 divided by 55?
What is 5/17 divided by 2/10?
What is 46 divided by 14/1?