If you take a number multiply by 7 then subtract 1. You get the same as if you took the number multiply by 5 then subtract 8. What is the number?

Ineed to know the answer to this algebra question.

Ihonestly have no clue if it's each or none.

Points j and k plotted on the coordinate grid are two vertices of rectangle jklm rectangle jklm has an area of 7 square units point j is located at 2,1 and point k is located at -5,1 each vertex of the rectangle is located at a point that has integer coordinates. what is the perimeter of rectangle jklm? (need answer asap)