Answer:
do 504 and 240÷2 and the answer is correct
3xy and 2yz ÷2
9x - 3y = -12
-9x +5y = -1
2y = -13
y = -13/2
-3x - 13/2 = 8/2
-3x = 21/2
-6x = 21
x = -21/6 = -7/2
(-7/2, -13/2)
the last one is 42m my pen was dying halfway i am so sorry HAHAHAHHA
