Answer:
x = 21
y = 15
Step-by-step explanation:
3x - 16 + 6x + 7 = 180
3x + 6x - 9 = 180
9x = 180 + 9
9x = 189/9
9x/9 = 189/9
6x + 7 = 11y - 32
6(21) + 7 = 11y - 32
126 + 7 = 11y - 32
133 + 32 = 11y
165 = 11y
11y/11 = 165/11
