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3x + 9 = 177
3x = 177 - 9
3x = 168
x = 168/3
x = 56
Comprobación....
(56+1) + (56+3) + (56+5) = 177
57 + 59 + 61 = 177
177 = 177
Los números son 57, 59 y 61.