What Divided by 8 Equals 90?
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 8, equals 90?
Solving What Divided by 8 Equals 90
Here’s how you would set up this question as an equation:
x
8
=
90
\frac{x}{8} = 90
8 x = 90
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 8, resulting in this equation:
x
=
90
∗
8
x = 90*8
x = 90 ∗ 8
Then we simplify and find our answer:
x
=
720
x = 720
x = 720
So, the answer to the question “What divided by 8 equals 90?” is 720.To prove this, we can take the original problem:
x
8
=
90
\frac{x}{8} = 90
8 x = 90
And insert 720 in the place of x:
720
8
=
90
\frac{720}{8} = 90
8 720 = 90
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 58 equals 32?
38 divided by what equals 72?
What is 4/7 divided by 6?
What is 18/20 divided by 3/1?
What is 21 divided by 14/17?