selesailan setiap persamaan nilai mutlak dari |2y+5|=|7-2y|

Bab Nilai Mutlak
Matematika SMA Kelas X

|2y + 5| = |7 - 2y|

(2y + 5)² = (7 - 2y)²
(2y + 5)² - (7 - 2y)² = 0
(2y + 5 + 7 - 2y) (2y + 5 - 7 + 2y) = 0
12 . (4y - 2) = 0
4y - 2 = 0
4y = 2
y = 2/4
y = 1/2

HP = { 1/2 }