Si 2x – 7 = 8, ¿cuál es el resultado de 2x + 7? A -1 B 6 C 15 D 22
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Respuesta:
D) 22
Explicación paso a paso:
2x - 7 = 8
2x = 8+7
2x = 15
x = 15/2
➡️
2x +7
2(15/2) + 7
15 +7
= 22