Q:

What Divided by 19 Equals 21?

Accepted Solution

A:
What Divided by 19 Equals 21?MethodsSetting 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 19, equals 21?Solving What Divided by 19 Equals 21Here’s how you would set up this question as an equation:x19=21\frac{x}{19} = 2119x​=21The 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 19, resulting in this equation:x=21∗19x = 21*19x=21∗19Then we simplify and find our answer:x=399x = 399x=399So, the answer to the question “What divided by 19 equals 21?” is 399.To prove this, we can take the original problem:x19=21\frac{x}{19} = 2119x​=21And insert 399 in the place of x:39919=21\frac{399}{19} = 2119399​=21Because this is true, the answer must be correct.Practice Other Division Problems Like This OneIf 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 17 equals 26?15 divided by what equals 23?What is 8/3 divided by 87?What is 1/10 divided by 9/13?What is 12 divided by 11/6?