Question

Keliling persegipanjang 94 cm dengan panjang(5x+2)cm dan lebar (2x+3)cm,maka panjang dan lebar persegipanjang

Answer 1

K = 2(p+l)
94 cm = 2(5x+2 + 2x+3)
94 cm = 2(7x+5)
94 cm = 14x + 10
14x = 94 - 10
14x = 84
x = 84/14
x = 6 maka,

panjang = 5(6) + 2 = 32 cm
lebar = 2(6) + 3 = 15 cm
Kalau ada yang salah silakandikomentari:)

Answer 2

K = 94 cm
2(p+l) = 94
p+l = 47
(5x+2)+(2x+3) = 47
7x+5=47
7x = 42
x= 6
panjang = 5x+2 = 30+2=32 cm
lebar = 2x+3 = 12+3 = 15 cm