Tentukan nilai n jika – 4n – 4 = n + 2 – 3n + 8 = 8n – 12

Jawaban:

-4n – 4 = n + 2.

-4n – n = 2 + 4.

-5n = 6.

n = 6/-5.

-3n + 8 = 8n – 12.

-3n – 8n = -12 – 8.

-11 n = -20.

n = -20/-11.

n = 20/11.