I think you are right but i am not sure
Answer:
Step-by-step explanation:
So the equation is 1/x+1/y=1/7
Multiplying both sides by 7xy, we get
7y+7x=xy
So x+y=xy/7
Or x=-y+xy/7
So x can be:
1,2,3,4,5,6
Answer:
c = 6
Step-by-step explanation:
2(4 + cy) = 12y + 8
8 + 2cy = 12y + 8
12y + 8 = 8 + 2cy
12y - 2cy = 8 - 8
2y (6 - c) = 0
Divide through by 2y
(6 - c) = 0
c = 6