7a - 5b + 5c ; - 7a + 4b - 6 porfavoorrrr?
7a - 5b + 5c ; - 7a + 4b - 6 porfavoorrrr.
7a - 5b + 5c ; - 7a + 4b - 6 porfavoorrrr.
En resumen
7a - 5b + 5c = - 7a + 4b - 6 7a + 7a - 5b + 5c = 4b - 6 14a - 5b + 5c - 4b = - 6 14a - 9b + 5c = - 6 14a - 9b + 5c - ( - 9b + 5c) = - 6 - ( - 9b + 5c) 14a = - 6 + 9b - 5c 14a / 14 = - 6 / 14 + 9b / 14 - 5c / 14 a = - 6 + 9b - 5c / 14.
7a - 5b + 5c = - 7a + 4b - 6
7a + 7a - 5b + 5c = 4b - 6
14a - 5b + 5c - 4b = - 6
14a - 9b + 5c = - 6
14a - 9b + 5c - ( - 9b + 5c) = - 6 - ( - 9b + 5c)
14a = - 6 + 9b - 5c
14a / 14 = - 6 / 14 + 9b / 14 - 5c / 14
a = - 6 + 9b - 5c / 14.