4x+10y=-40-5x+3y=-40
4x+5x=3y-10y=-40+40
9x=-7y=0
6x-5y=-209x+2y=-30
6x+209x =2y+5y=35
215x=7y=35
x-5y=-142x+4y=-30
x+142x=4y+5y=-30
143x=9y=-30
8x+6y=-10-x-3y=20
8x+x=-3y-6y=20+10
9x=-9y=30
Answer:
Step-by-step explanation:
Answer: I think the answer is D
Answer: if you're asking how to write it then it would be 7:21
