Answer: 13
Step-by-step explanation:
add everything together and make it equal to the perimeter
(4x - 8) + (2x + 3) + x = 30
add the x’s together
7x - 8 + 3 = 30
add the normal numbers (lol idk how to call them)
7x - 5 = 30
solve for x
7x - 5 = 30
+5 +5
_________
7x = 35
__ ___
7 7
_________
x = 5
then solve for each side:
2x + 3
2(5) + 3
10 + 3
13
4x - 8
4(5) - 8
20 - 8
12
x = 5 (duhhh)
so out of all of these, 2x + 3 is the longest side and it’s length is 13 so that’s the answer :)
