Sum Of Lists

# Write your solution here
def solve(list_1 : list, list_2 : list):
    sum = []
    for i in range(len(list_1)):
        sum.append(list_1[i] + list_2[i])
    return sum

if __name__ == "__main__":
    a = [1, 2, 3]
    b = [7, 8, 9]
    print(solve(a, b)) # [8, 10, 12]