Question 964145
2L+2W= 50 and the problem says that L= 2W+7, so we substitute for L:
2(2W+7)+2W= 50 Multiply on left:
4W+14+2W= 50 Subtract 14 on both sides and add W on left:
6W= 36 Divide both sides by 6:
W= 6 This is the width 
And the length? The problem doesn't ask for it, but it doesn't hurt for you to have it. It's 6*2+7= 19