Brain Test 1 Level 230
What is X
Take “5” from A) and add it to “-5” on D), then you will have “D) 0”.
Follow the screen sequence
Use the images as a compact replay of the solving path. The text below each frame explains what should change.
Video walkthrough
Same number in other versions
Brain Test versions can reuse the same level number with a different puzzle. If the screenshot or question does not match your game, switch to the same number in another version or use the nearby level links.
Strategy guide
- 1.Drag the '5' from option A to combine with '-5' in option D;
- 2.Look for interactive elements you can move between answer choices;
- 3.Focus on creating zero by merging positive and negative numbers.
Common mistakes
- 1.Adding 5 and -5 directly without moving them to create 0;
- 2.Thinking X is a number from the options without combining elements;
- 3.Trying to solve mathematically without noticing the movable '5'.
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