Question

Blank ( X plus or minus Blank )= 6X plus or minus Blank, Answer: X = 4
How to complete the blanks? Thanks

Answer 1

y(x-y)=6x-y;
y(4-y)=24-y
4y-y^2=24-y
y^2-5y+24=0
(y +3)(y -8)=0 so y either -3 or 8

y(x+y)=6x-y;
y(4+y)=24-y
4y+y^2=24-y
y^2+5y-24=0
(y -3)(y +8)=0 so y either +3 or- 8

i am not sure about Q

Answer 2

so the blank +-3 and +-8