Math Tutor Explains: What Divided by 90 Equals 13?

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Math Tutor Explains: What Divided by 90 Equals 13? | Thinkster Math

Math tutor helps solve: hat Divided by 90 Equals 13?

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 90, equals 13?

Math Tutor Helps Solve: What Divided by 90 Equals 13

Here’s how you would set up this question as an equation:

\frac{x}{90} = 13

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 90, resulting in this equation:

x = 13*90

Then we simplify and find our answer:

x = 1170

So, the answer to the question “What divided by 90 equals 13?” is 1170.To prove this, we can take the original problem:

\frac{x}{90} = 13

And insert 1170 in the place of x:

\frac{1170}{90} = 13

Because this is true, the answer must be correct.

Math Tutor Suggests: 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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