Q:

18 Divided by What Equals 42?

Accepted Solution

A:
18 Divided by What Equals 42? 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 18 by to equal 42? Solving 18 Divided by What Equals 42 Here’s how you would set up this question as an equation: 18 x = 42 \frac{18}{x} = 42 x 18 ​ = 42 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 18: 18 = 42 ∗ x 18 = 42*x 18 = 42 ∗ x Then we can isolate x on the right side of the equation by dividing both sides by 42: 18 42 = x \frac{18}{42} = x 42 18 ​ = x 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. x = 0.429 x = 0.429 x = 0.429 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 24 equals 39? 67 divided by what equals 22? What is 10/7 divided by 43? What is 3/12 divided by 9/15? What is 64 divided by 8/19?