THESE ARE MY LAST 10 POINTS I CANT ASK ANYMORE PLEASE DONT FAIL ME. PLS SHOW WORKING TOO IM BEGGING.

What does x = in this equation x+3+2x=x+5

Step by step explanation pls for 10 pts the length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?  

Can someone answer and tell me how to do this (will mark brainliest)