Respuesta:
B) 10
Explicación paso a paso:
GI = IS = b
SE = EL = LA = a
b + b + a + a + a = 17
2b + 3a = 17
b + a + a = x
b + 2a = x
b + a = 7
...
2b + 2a + a = 17
2 ( b + a ) + a = 17
2(7) + a = 17
14 + a = 17
a = 3
b + 3 = 7
b = 4
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x = 4 + 3 + 3 = 10
