Resposta :
7 + 7 + 5 + 3 + 3 + 2 + 1
14 + 5 + 3 + 3 + 2 + 1
19 + 3 + 3 + 2 + 1
25 + 2 + 1
27 + 1
28
28 / 7 = 4
letra B
7x = 7 – 7 – 5 – 3 – 3 – 2 – 1
7x = 14 + 8 + 5 + 1
7x = 22 + 6
7x = 28
x = 28/7
x = 4
❑Alternativa:B
7 + 7 + 5 + 3 + 3 + 2 + 1
14 + 5 + 3 + 3 + 2 + 1
19 + 3 + 3 + 2 + 1
25 + 2 + 1
27 + 1
28
28 / 7 = 4
letra B
7x = 7 – 7 – 5 – 3 – 3 – 2 – 1
7x = 14 + 8 + 5 + 1
7x = 22 + 6
7x = 28
x = 28/7
x = 4
❑Alternativa:B