Problem 1: x = 42, y = 356, solve z = x + y, and state what z equals:
Problem 2: x = 200, y = 600, solve o = y - x, and state what o equals:
Problem 3: x = 40, y = 2, solve h = y * x, and state what h equals:
Problem 4: x = 5, y = 60, solve r = x / y, and state what r equals: