81 Divided by What Equals 58?
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 can we divide 81 by to equal 58?
Solving 81 Divided by What Equals 58
Here’s how you would set up this question as an equation:
81
x
=
58
\frac{81}{x} = 58
x 81 = 58
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, it can be done in two steps. The first step is to multiply both sides by x to isolate 81:
81
=
58
∗
x
81 = 58*x
81 = 58 ∗ x
Then we can isolate x on the right side of the equation by dividing both sides by 58:
81
58
=
x
\frac{81}{58} = x
58 81 = x
When we simplify the new equation, we can solve for x. In this example, we will round to the nearest three decimal places if that’s needed.
x
=
1.397
x = 1.397
x = 1.397
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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36 divided by what equals 3?
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What is 3/8 divided by 2/7?
What is 40 divided by 1/18?