42 Divided by What 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 can we divide 42 by to equal 57?
Solving 42 Divided by What Equals 57
Here’s how you would set up this question as an equation:
42
x
=
57
\frac{42}{x} = 57
x 42 = 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, it can be done in two steps. The first step is to multiply both sides by x to isolate 42:
42
=
57
∗
x
42 = 57*x
42 = 57 ∗ x
Then we can isolate x on the right side of the equation by dividing both sides by 57:
42
57
=
x
\frac{42}{57} = x
57 42 = 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
=
0.737
x = 0.737
x = 0.737
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 94 equals 55?
33 divided by what equals 14?
What is 16/6 divided by 16?
What is 4/20 divided by 18/15?
What is 71 divided by 14/19?