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5. (x + 2) = 20
5x + 10 = 20
5x = 20 - 10
5x = 10
x = 10/5
x = 2 → respuesta
COMPROBACIÓN:
5. (x + 2) = 20
5. (2 + 2) = 20
5. (4) = 20
20 = 20 → Se cumple la igualdad
¡El resultado es correcto!