[질문] 개념원리문제은행8-가 65~68답좀요ㅠ급해영

65P 4,18,-3/1/3/3/4/2 66P C=5/9(F-32),y=1/11(4x-60),l=2s+6/r/3/1/2/3/4 67P 9/10,-16,-24,-5 / 7x-7y,6x-3y,5x-12y / 10x+1,y=x/2-1/12,y=4x/5,-x/4-5/12