The peremeter of another rectangluar shaped lot is 420 feet the length is twice the width. find both demensions

Let's say the width is equal to x

We can then say that the length is 2x

We need to add together 2 of both sides;
2x+2x+x+x = 6x

Then we can divide 420 by 6 to get the width:
420/6 = 70ft

Then double it to get the length:
70*2 = 140ft

width = 70ft
length = 140ft
Hope this helps! :)

X= 49; x = 4step 1: foilstep 2: equal both to 0step 3: find x individually