Respuesta: 57
Explicación paso a paso:
x + 6m + 21 = 180 ⇒ x = 159 - 6m ….... 1
x = 3m + 6 ........ 2
reemplazamos 2 en 1:
x = 159 - 60
3m + 6 = 159 - 6m
9m = 153
m = 17
Hallamos x:
x = 3m + 6
x = 3(17) + 6
x = 57
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Respuesta: 57
Explicación paso a paso:
x + 6m + 21 = 180 ⇒ x = 159 - 6m ….... 1
x = 3m + 6 ........ 2
reemplazamos 2 en 1:
x = 159 - 60
3m + 6 = 159 - 6m
9m = 153
m = 17
Hallamos x:
x = 3m + 6
x = 3(17) + 6
x = 57