Ecuaciones de primer grado ayuda pliss?
Ecuaciones de primer grado ayuda pliss.
10Mebo
En resumen
1) [(7 - 2X) / (2 - X)] = 1 (7 - 2X) = 1(2 - X) 7 - 2X = 2 - X 7 - 2 = - X + 2X 5 = X 2) [(2X - 10) / 5] = 2X + 1 2X - 10 = 5(2X + 1) 2X - 10 = 10X + 5 - 10 - 5 = 10X - 2X - 15 = 8X X = - 15 / 8 3) [10 / (2 - 3X)] = 3 10 = 3(2 - 3X) 10 = 6 - 9X 10 - 6 = - 9X 4 = - 9X X = - 4 / 9.
Mejor respuesta
1
1)
[(7 - 2X) / (2 - X)] = 1
(7 - 2X) = 1(2 - X)
7 - 2X = 2 - X
7 - 2 = - X + 2X
5 = X
2) [(2X - 10) / 5] = 2X + 1
2X - 10 = 5(2X + 1)
2X - 10 = 10X + 5 - 10 - 5 = 10X - 2X - 15 = 8X
X = - 15 / 8
3) [10 / (2 - 3X)] = 3
10 = 3(2 - 3X)
10 = 6 - 9X
10 - 6 = - 9X
4 = - 9X
X = - 4 / 9.
4) [(2X - 10) / 5] = 3(X + 1)
2X - 10 = 15(X + 1)
2X - 10 = 15X + 15 - 10 - 15 = 15X - 2X - 25 = 13X
X = - 25 / 13.