Question #0ff05
1 Answer
Dec 12, 2016
Explanation:
If we let x, be the length of the second part, then.
the length of the first part is x + 5
The 2 parts must total to 21
rArrx+5+x=21rArr2x+5=21 subtract 5 from both sides of the equation.
2xcancel(+5)cancel(-5)=21-5
rArr2x=16 To solve for x, divide both sides by 2
(cancel(2) x)/cancel(2)=16/2
rArrx=8
rArr"first part " =x+5=8+5=13" inches"
"and second part " =x=8" inches"