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45X+5=275| 45X=275-5| 45X=270| X=270/45| X=6
Suerte...
2.5 X + 6 = 31
resta 6 de ambos lados
2.5 X + (6 - 6) = 31 - 6
6 - 6 = 0:
2.5 X = 31 - 6
31 - 6 = 25:
2.5 X = 25
2.5/2.5 = 1:
X = 25/2.5
25/2.5 = 10.:
respuesta:
X = 10.
resolver para x:
45 X + 5 = 275
Sustraer 5 de ambos lados:
45 X + (5 - 5) = 275 - 5
5 - 5 = 0:
45 X = 275 - 5
275 - 5 = 270:
45 X = 270
X = 270/45
respuesta:
X = 6
espero te sirva. .