## 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.

## Checking the Answer

Once we have found the solution, we need to check it to make sure it’s correct. To do this, we can plug the number 4 into the equation and see if it equals 90. If it does, then we have found the correct answer. In this case, 15×2 + 7×4 = 90, so we can say that the answer is 4.

The puzzle of 15×2 + 7×4 = 90 can be a great way to practice and improve your math skills. By breaking the equation down into its individual elements and plugging in different numbers, you can find the correct solution. And once you’ve found the solution, you can check it to make sure it’s correct. In this case, the answer is 4.

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