Three numbers

function ThreeNumbers(arr) {
    let numbers = arr[0].Split(' ').Map(Number);
    console.log(check(numbers[0],numbers[1],numbers[2])||check(numbers[1],numbers[2],numbers[0])||check(numbers[2],numbers[0],numbers[1])||'No')
    function  check(num1,num2,sum) {
        if(num1+num2 != sum)
            return false;
        if(num1>num2)
            [num1,num2]=[num2,num1];
        return `${num1}+${num2}= ${sum}`;
        }
}
ThreeNumbers(['8 15 7']);