Resuelve las ecuaciones : A. 3x / 7 = - 5 B. 5x / 6 = 3 / 4 C. - x / 5 = - 3 / 10 D. - 8x = 2. 25 E. - 4x / 5 = 8 / 15 F. 2x / 7 - 8 = 2 G. 5x / 6 - 0. 5 = - 2. T H. - 4x / 3 + 6 = 5 / 3 I. - 5x / 8 + 7 / 2 = - 4 J. 6x / - 7 - 1 / 3 = - 3 / 2 Ayudaaaaa!
En resumen
A) 3x / 7 = - 5 B) 5x / 6 = 3 / 4 C) - x / 5 = - 3 / 10 3x = - 5(7) 4(5x) = 6(3) 10( - x) = 5( - 3) 3x = - 35 20x = 18 - 10x = - 15 x = - 35 / 3 x = 18 / 20 x = - 15 / - 10 x = 9 / 10 x = 3 / 2 D) - 8x = 2. 25 E) - 4x / 5 = 8 / 15 F) 2x / 7 - 8 = 2 x = 2.
A) 3x / 7 = - 5 B) 5x / 6 = 3 / 4 C) - x / 5 = - 3 / 10 3x = - 5(7) 4(5x) = 6(3) 10( - x) = 5( - 3) 3x = - 35 20x = 18 - 10x = - 15 x = - 35 / 3 x = 18 / 20 x = - 15 / - 10 x = 9 / 10 x = 3 / 2
D) - 8x = 2.
25 E) - 4x / 5 = 8 / 15 F) 2x / 7 - 8 = 2 x = 2.
25 / - 8 15( - 4x) = 5(8) 2x / 7 = 2 + 8 x = - 2.
25 / 8 - 60x = 40 2x / 7 = 10 x = - 40 / 60 2x = 10(7) x = - 4 / 6 2x = 70 x = - 2 / 3 x = 70 / 2 x = 35
G) 5x / 6 - 0.
5 = 2.
1 H) - 4x / 3 + 6 = 5 / 3 I) - 5x / 8 + 7 / 2 = - 4 5x / 6 = 2.
1 + 0.
5 - 4x / 3 = 5 / 3 - 6 - 5x / 8 = - 4 - 7 / 2 5x / 6 = 2.
6 - 4x / 3 = - 13 / 3 - 5x / 8 = - 15 / 2 5x = 2.
6(6) En unaigualdad los 2( - 5x) = 8 ( - 15) 5x = 15.
6 denominadores iguales - 10x = - 120 x = 15.
6 / 5 se eliminan : x = - 120 / - 10 x = 3.
12 - 4x = - 13 x = 12 x = - 13 / - 4 x = 13 / 4
J) 6x / - 7 - 1 / 3 = - 3 / 2 6x / - 7 = - 3 / 2 + 1 / 3 6x / - 7 = - 7 / 6 6(6x) = - 7( - 7) 36x = 49 x = 49 / 36.