Selesaikan setiap persamaan nilai mutlak , I2y+5I = I7-2yI

semoga membantu:) #maaf kalau salah

I2y + 5I = I7 - 2yI
(2y + 5)² = (7 - 2y)²
4y² + 20y + 25 = 49 - 28y + 4y²
20y + 25 = 49 - 28y
20y + 28y = 49 - 25
48y = 24
y = 1/2

jadi HP : {1/2}