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6 (2x + 8) + 4 = (6x - 9) 3
12x + 48 + 4 = 18x - 27
12x + 52 = 18x - 27
12x - 18x = - 27 - 52
- 6x = - 79
x = -79/-6
x = 79/6
Solución :
x = 79/6
6(2x+8) = 12x + 48
12x + 48 + 4 = (12x-9-6x)3
(12x-9-6x)3 = 36x - 27 - 18x
12x + 48 + 4 = 36x - 27 - 18x
12x - 36x + 18x = -27 - 48 - 4
-16x = -79
x = -79/-16
x = 4.9375
x = 4.9
Los signos de más y menos cambian al cambiar de lugar en la ecucación, primero se sacan los resultados dentro de éstos para resolverla.