78 Divided by What Equals 51?

Accepted Solution

78 Divided by What Equals 51? 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 51? Solving 78 Divided by What Equals 51 Here’s how you would set up this question as an equation: 78 x = 51 \frac{78}{x} = 51 x 78 ​ = 51 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: 78 = 51 ∗ x 78 = 51*x 78 = 51 ∗ x Then we can isolate x on the right side of the equation by dividing both sides by 51: 78 51 = x \frac{78}{51} = x 51 78 ​ = 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 = 1.529 x = 1.529 x = 1.529 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 81 equals 40? 72 divided by what equals 69? What is 13/20 divided by 39? What is 14/7 divided by 6/5? What is 24 divided by 4/3?