Respuesta:
2 - 2s = 3/4s + 13
-2/1s - 3/4s = 13 - 2
-8/4s - 3/4s = 11
-11/4s = 11
-11s = 11 × 4
-11s = 44
-s = 44/11
s = -4
Reemplazando:
2 - 2 × -4 = 3/4 × -4 + 13
2 + 8 = -3 + 13
10 = 10
