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Mathematics, 26.08.2021 14:20 adiaripley6408

Comprueba que la ecuación 3x + 3 = 9 tiene por solución x = 2; para ello sustituye en la ecuación la incógnita x por 2:

3 • ___ + 3 = 9

2 es de la ecuación 3x + 3 = 9

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