What Divided by 30 Equals 7?
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 30, equals 7?
Solving What Divided by 30 Equals 7
Here’s how you would set up this question as an equation:
x
30
=
7
\frac{x}{30} = 7
30 x = 7
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 30, resulting in this equation:
x
=
7
∗
30
x = 7*30
x = 7 ∗ 30
Then we simplify and find our answer:
x
=
210
x = 210
x = 210
So, the answer to the question “What divided by 30 equals 7?” is 210.To prove this, we can take the original problem:
x
30
=
7
\frac{x}{30} = 7
30 x = 7
And insert 210 in the place of x:
210
30
=
7
\frac{210}{30} = 7
30 210 = 7
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 21 equals 8?
15 divided by what equals 75?
What is 11/7 divided by 44?
What is 3/16 divided by 1/14?
What is 57 divided by 13/5?