[-78×{(-4 - 11):(7 - 12)}]

[-78×{(-4 - 11):(7 - 12)}]
-78 x (-15:-5)
-78 x 3
-234

[-78 × {(-4 – 11) ÷ (7 – 12)}]
= [-78 × {-(4+11) ÷ {-(12 – 7)}]
= -78 × {(-15) ÷ (-5)}
= -78 × (15 ÷ 5)
= -78 × 3
= -234

Semoga membantu
Maaf kalau salah.