Q:

45 Divided by What Equals 80?

Accepted Solution

A:
45 Divided by What Equals 80? 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 45 by to equal 80? Solving 45 Divided by What Equals 80 Here’s how you would set up this question as an equation: 45 x = 80 \frac{45}{x} = 80 x 45 ​ = 80 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 45: 45 = 80 ∗ x 45 = 80*x 45 = 80 ∗ x Then we can isolate x on the right side of the equation by dividing both sides by 80: 45 80 = x \frac{45}{80} = x 80 45 ​ = 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 = 0.563 x = 0.563 x = 0.563 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 38 equals 39? 74 divided by what equals 56? What is 11/18 divided by 12? What is 13/7 divided by 3/6? What is 13 divided by 8/4?