What Divided by 7 Equals 57?
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 57?
Solving What Divided by 7 Equals 57
Here’s how you would set up this question as an equation:
x
7
=
57
\frac{x}{7} = 57
7 x = 57
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
=
57
∗
7
x = 57*7
x = 57 ∗ 7
Then we simplify and find our answer:
x
=
399
x = 399
x = 399
So, the answer to the question “What divided by 7 equals 57?” is 399.To prove this, we can take the original problem:
x
7
=
57
\frac{x}{7} = 57
7 x = 57
And insert 399 in the place of x:
399
7
=
57
\frac{399}{7} = 57
7 399 = 57
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!
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68 divided by what equals 1?
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What is 5/13 divided by 16/12?
What is 25 divided by 18/11?