49 Divided by What Equals 21?

Accepted Solution

49 Divided by What 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 can we divide 49 by to equal 21?Solving 49 Divided by What Equals 21Here’s how you would set up this question as an equation:49x=21\frac{49}{x} = 21x49​=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, it can be done in two steps. The first step is to multiply both sides by x to isolate 49:49=21∗x49 = 21*x49=21∗xThen we can isolate x on the right side of the equation by dividing both sides by 21:4921=x\frac{49}{21} = x2149​=xWhen 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=2.333x = 2.333x=2.333Practice 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 27 equals 60?16 divided by what equals 38?What is 8/19 divided by 82?What is 17/18 divided by 20/6?What is 73 divided by 11/15?