5x + 2y = 2 { 3x - 6y = - 4 en el metodo de igualacion, sustitucion y eliminacion AYUDAAA examen final, ayuda por favor, regalo coronita si me ayuda
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5x + 2y = 2
3x - 6y = - 4
5x = 2 - 2y
x = 2 - 2y / 5
3x = - 4 + 6y
x = - 4 + 6y / 3
2 - 2y - 4 + 6y
---------- = -----------
5 3
3(2 - 2y) = 5(-4 + 6y)
6 - 6y = - 20 + 30y
- 6y - 30y = - 20 - 6
- 36y = - 26
36y = 26
y = 26 / 36
(y = 13 / 18)
REEMPLAZAMOS Y, PARA HALLAR X:
5x + 2 (13 / 18) = 2
5x (18) + 2(13) = 2 (18)
90x + 26 = 36
90x = 36 - 26
90x = 10
x = 10 / 90
(x = 1 / 9)