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19 + 4h = 1 - 5h
19 - 1 = -5h - 4h
18 = -9h
9h = -18
h = -18/2
h = -2
Respuesta -2 !
Salu2
19 + 4h = 1 - 5h
4h + 5h = 1 - 19
9h = - 18
h = - 18/9
h = - 2
Respuesta.
h = - 2