Respuesta :

Answer:

(a) 7 + 4 = 11

(b) 1 + 3 + 5 = 9

(c) (7 x 2) + 1 = 15

(d) (7 x 2) - 1 = 13

(e) 13 - 9 = 4

Step-by-step explanation:

(a) 5 + 4 = 9

(b) 7 + 1 + 11 = 19

(c) 25 = 12 + 12 + 1

(d) 7 = 4 + 4 - 1

(e) 13 - 11 = 2