Ecuaciones 4x + 9 = 17 + 2x 5x + 15 = 2x - 6 7x + 15 = 2x - 6 9x - 4 = 8x + 3 4x + 2 = 2x + 8 8x + 7 = 5x - 2 6x + 3 = 4x + 5 5x - 3 = 3x + 5 3x + 4 = 4x + 2 x + 3 = 5x + 4 8 - 5x = 8 + 2x Y el procedimiento de como la hicieron.
ax² + bx + c = 0
En resumen
- 2x / 4x + 9 = 17 + 2x / - 2x - 2x + 4x + 9 = 17 2x = 17 - 9 2x = 8 x = 8 / 2 x = 4 . - 2x + 5x + 15 = - 6 3x = - 6 - 15 3x = - 21 x = - 21 / 3 x = - 7 . - 2x + 7x + 15 = - 6 5x = - 6 - 15 5x = - 21 x = - 21 / 5 . - 8x + 9x - 4 = 3 x = 3 + 4 x = 7 .
- 2x / 4x + 9 = 17 + 2x / - 2x - 2x + 4x + 9 = 17
2x = 17 - 9
2x = 8
x = 8 / 2
x = 4
.
- 2x + 5x + 15 = - 6
3x = - 6 - 15
3x = - 21
x = - 21 / 3
x = - 7
.
- 2x + 7x + 15 = - 6
5x = - 6 - 15
5x = - 21
x = - 21 / 5
.
- 8x + 9x - 4 = 3
x = 3 + 4
x = 7
.
4x - 2x + 2 = 8
2x = 8 - 2
2x = 6
X = 6 / 2
x = 3
.
8x - 5x + 7 = - 2
3x = - 2 - 7
3x = 9
x = 9 / 3
x = 3
.
6x - 4x + 3 = 5
2x = 5 - 3
2x = 2
x = 2 / 2
x = 1
.
5x - 3x - 3 = 5
2x = 3 + 5
2x = 8
x = 8 / 2
x = 4
.
4 = - 3x + 4x + 2
4 - 2 = x
x = 2
.
3 = 5x - x + 4
3 - 4 = 4x - 1 = 4x
x = - 1 / 4
.
8 = 8 + 2x + 5x
8 - 8 = 7x
0 = 7x
x = 0 / 7
x = 0.
150 - x - 45 150 - 45 = x 105 = x x = 105.
Por reducción x + y = 20 (1) x - y = 18 (2) sumas 2x = 38 X = 38 / 2 X = 19 Reemplazas en cualquier ecuacion En (1) X + Y = 20 19 + Y = 20 Y = 20 - 19 Y = 1 X = 19 Y = 1.
Respuesta : 27Explicación paso a paso : x = 1y = 2(1 + 2) (1 + 2) (1 + 2)3 x 3 x 39 x 327.