Respuesta:
Explicación paso a paso:
x + 3x + 2 (x+3x) = 180
x + 3x + 2 × 4x = 180
x + 3x + 8x = 180
12x = 180
x = 180 : 12
x = 15
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Respuesta:
Explicación paso a paso:
x + 3x + 2 (x+3x) = 180
x + 3x + 2 × 4x = 180
x + 3x + 8x = 180
12x = 180
x = 180 : 12
x = 15