In Detail JAVASCRIPT Solution
Intuition\n Describe your first thoughts on how to solve this problem. \nTo solve this problem, you\'ll need to parse the input string, perform the addition or 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\nTo solve this problem, you\'ll need to parse the input string, perform the addition or subtraction on the fractions, and then return the result in its simplest form.\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n1. GCD Calculation:\n\n- The gcd function is used to simplify fractions by finding the greatest common divisor of the numerator and denominator.\n2. Adding Fractions:\n\n- The addFractions function adds two fractions by using the common denominator formula:\n\n      new\xA0numerator= n1\xD7d2+n2\xD7d1/d1xd2\n\n- It then simplifies the resulting fraction using the GCD.\n3. Extracting Fractions:\n\n- The regular expression /[+-]?\\d+\\/\\d+/g extracts all fractions from the expression, including their signs.\n4. Processing Fractions:\n\n- Each fraction is processed by splitting it into its numerator and denominator, then adding it to the cumulative result.\n5. Result Formatting:\n\n- If the denominator is negative, both the numerator and denominator are negated to keep the fraction properly formatted.\n6. Edge Cases:\n\n- The function handles cases where the result is an integer by returning it in the form of numerator/1.\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\nTime Complexity: O(L), where L is the length of the input string expression.\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\nO(1), constant space usage.\n\n# Code\n```javascript []\n/**\n * @param {string} expression\n * @return {string}\n */\nvar fractionAddition = function(expression) {\n    // Helper function to calculate the Greatest Common Divisor (GCD)\n    function gcd(a, b) {\n        return b === 0 ? a : gcd(b, a % b);\n    }\n\n    // Helper function to add two fractions\n    function addFractions(n1, d1, n2, d2) {\n        // Calculate the new numerator and denominator\n        let numerator = n1 * d2 + n2 * d1;\n        let denominator = d1 * d2;\n\n        // Simplify the fraction by dividing both by their GCD\n        let commonDivisor = gcd(Math.abs(numerator), Math.abs(denominator));\n        return [numerator / commonDivisor, denominator / commonDivisor];\n    }\n\n    // Regular expression to extract fractions from the expression\n    let regex = /[+-]?\\d+\\/\\d+/g;\n    let fractions = expression.match(regex);\n\n    // Initialize the result as 0/1\n    let resultNumerator = 0;\n    let resultDenominator = 1;\n\n    // Process each fraction in the expression\n    for (let fraction of fractions) {\n        let [numerator, denominator] = fraction.split(\'/\').map(Number);\n\n        // Add the current fraction to the result\n        [resultNumerator, resultDenominator] = addFractions(resultNumerator, resultDenominator, numerator, denominator);\n    }\n\n    // Ensure the result is in the correct format\n    if (resultDenominator < 0) {\n        resultNumerator = -resultNumerator;\n        resultDenominator = -resultDenominator;\n    }\n\n    return resultNumerator + \'/\' + resultDenominator;\n};\n```
['JavaScript']