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Math Tutor Solution to 78 Divided by What Equals 86?
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 78 by to equal 86?
Math Tutor Solves 78 Divided by What Equals 86
Here’s how you would set up this question as an equation:
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 78:
Then we can isolate x on the right side of the equation by dividing both sides by 86:
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.
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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