Question

calcular: S = {1/3 + 1/2 - 1} - {2/3 + 1/2} a) - 1/6 b) 1/6 c) 4/3 d) 1/3 e) 4/3
​

Answer 1

djxyjdkdow8fyeegebbdbdjxygfhdbeneif8f6etc2b4 no entiendo