Nilai mutlak dari |2y+5| = |7-2y|

Nilai Mutlak

|2y + 5| = |7 - 2y|
(2y + 5)² - (7 - 2y)² = 0
▶ a² - b² = (a + b)(a - b)
(12)(4y - 2) = 0
4y - 2 = 0
4y = 2
y = 2/4
y = 1/2

HP = {1/2}