Answer: x = 10, y = 20
Explanation:
180 = 7x + 90 + 20
180 - 90 - 20 = 7x
70 = 7x
x = 10
90 = 5x + 2y
90 = 5(10) + 2y
90 = 50 + 2y
90 - 50 = 2y
40 = 2y
20 = y
9.4m questions
12.1m answers