let arr_1 = [3, 5, 22, 5, 7, 2, 45, 75, 89, 21, 2]
let arr_2 = [9, 2, 42, 55, 71, 22, 4, 5, 90, 25, 26]
function sumArrays(arr_1, arr_2) {
let sum = 0;
for (let i = 0; i < arr_1.length; i++) {
sum += arr_1[i];
}
for (let i = 0; i < arr_2.length; i++) {
sum += arr_2[i];
}
return sum;
}