What Divided by 7 Equals 3?
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 7, equals 3?
Solving What Divided by 7 Equals 3
Here’s how you would set up this question as an equation:
x
7
=
3
\frac{x}{7} = 3
7 x = 3
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 7, resulting in this equation:
x
=
3
∗
7
x = 3*7
x = 3 ∗ 7
Then we simplify and find our answer:
x
=
21
x = 21
x = 21
So, the answer to the question “What divided by 7 equals 3?” is 21.To prove this, we can take the original problem:
x
7
=
3
\frac{x}{7} = 3
7 x = 3
And insert 21 in the place of x:
21
7
=
3
\frac{21}{7} = 3
7 21 = 3
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 75 equals 2?
91 divided by what equals 90?
What is 19/14 divided by 70?
What is 6/9 divided by 4/15?
What is 8 divided by 20/18?