# Solving the Mathematical Puzzle of 15×2 + 7×4 = 90

## Understanding the Puzzle We all know that math can be an intimidating subject, but it can also be a lot of fun. One way to make math more enjoyable is to work on puzzles that get the brain stretching and thinking in new ways. The puzzle of 15×2 + 7×4 = 90 is a great example of that. It’s a simple equation that can be solved with a few steps, but it can also be a great challenge for those of us looking to hone our math skills.

## Breaking it Down To solve this puzzle, we need to break it down into its individual elements. The first thing we need to do is figure out what the “x” stands for. In this case, the “x” is a variable, which means it can represent any number. Once we know what the “x” stands for, we can start plugging in numbers to see which ones will make the equation equal 90.

## Finding the Solution After we know what the “x” stands for, we can start plugging in numbers to find the solution. For this equation, we can start with a simple number like 2. If we plug in 2 for the “x”, then the equation becomes 15×2 + 7×2 = 90. This means that if we multiply 15 and 2, and then add 7 and 2, the equation will equal 90. We can also try different numbers like 3, 4, and 5 to see if any of those work. However, after trying different numbers, we find that the only number that works is 4. 