30 Divided by What Equals 12?
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 30 by to equal 12?
Solving 30 Divided by What Equals 12
Here’s how you would set up this question as an equation:
30
x
=
12
\frac{30}{x} = 12
x 30 = 12
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 30:
30
=
12
∗
x
30 = 12*x
30 = 12 ∗ x
Then we can isolate x on the right side of the equation by dividing both sides by 12:
30
12
=
x
\frac{30}{12} = x
12 30 = 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
=
2.500
x = 2.500
x = 2.500
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 35 equals 39?
45 divided by what equals 69?
What is 16/11 divided by 57?
What is 1/20 divided by 7/19?
What is 80 divided by 2/9?