Ejercicios Ecuaciones
Enviado por Karina81 • 20 de Mayo de 2014 • 361 Palabras (2 Páginas) • 305 Visitas
Si 2(x – 1) + 3(x + 1) = 2x + 8, entonces x =7/3
2x – 2 + 3x + 3 = 2x +8
5x + 1 =2x + 8
5x – 2x = 8-1
3x=7
X= 7
3
Si 3/7 x + 5/14 = 4/7 x , entonces x = 5/2
5/14=4/7x- 3/7x
5/14=1/7x
5/14=x
1/7
5*7=x
14*1
35=x /7 (simplificamos)
14
5=x
2
Si 4 + 2/x = 3 + 4/x , entonces x = 2
4 – 3 = 4 – 2
X X
1 = 4-2
X
1= 2
X
1 * X =2
X = 2
Si 1/3x-1/9x+1/18x=1,entonces x=5/18
1 - 1 + 1 = 1
3x 9x 18 x
6 – 2 + 1 =1
18x
5 = 1
18 x
5 = 1 *18 x
5 = x
18
Si 2(x – 1) + 3(x + 1) = 2x + 8, entonces x =7/3
2x – 2 + 3x + 3 = 2x +8
5x + 1 =2x + 8
5x – 2x = 8-1
3x=7
X= 7
3
Si 3/7 x + 5/14 = 4/7 x , entonces x = 5/2
5/14=4/7x- 3/7x
5/14=1/7x
5/14=x
1/7
5*7=x
14*1
35=x /7 (simplificamos)
14
5=x
...