We have prepared an equation that combines a parenthesis, a subtraction constant and an unknown on both sides. Such a combination requires careful attention to each step and a systematic approach to solving. Take the plunge and see if you can arrive at the right number.

Give your brain a moment of mathematical training. Algebra isn’t just dry theory from your school years – it’s an exercise in precision and logical thinking that has practical value far beyond the classroom. When you solve an equation, you have to coordinate several thought processes at once: memorizing the rules, tracking the transformations of expressions, and watching for the correctness of each intermediate step. That’s why algebraic problems are a great tool for keeping mentally fit, and they can be pretty entertaining.

What can you expect today?

The first step is to multiply the brackets on the left side, then you have to deal with the constant -2 . Then you have to deal with your own knowledge. Only after you have simplified correctly will you get to the final result. Try to solve it without a calculator – it’s a more reliable check of your skills.

Calculate the example. ━━ Calculate the example. ( Source: Shutterstock )

The correct solution

Did you make it? Now you can check if you did the math correctly.

The correct answer is y = 5.

The procedure looks like this: first, multiply the parenthesis to get 3y + 12 – 2 = 2y + 15. Simplify the left-hand side to 3y + 10 = 2y + 15.

Do you have someone in your neighbourhood who likes to solve puzzles? Share this example and compare who gets to the result faster. Math challenges are a great way to practice attention, strengthen logical thinking and keep your brain active. And if you enjoyed this type of challenge, explore our range of other puzzles and IQ tests – we have lots of interesting challenges for your grey cells.