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F) 2 / 3 + x / 4 = 3 / 4 - x / 3g)2 / 3² = 2x - 8 / 7 + 2³h)5 / 4 ?

F) 2 / 3 + x / 4 = 3 / 4 - x / 3 g)2 / 3² = 2x - 8 / 7 + 2³ h)5 / 4 . 3 + x / 4 = 2 / 3 - 2 / 3x.

En resumen

2 / 3 + x / 4 = 3 / 4 - x / 3 x / 4 + x / 3 = 3 / 4 - 2 / 3 reducimos a comun denominador m. C.

Mejor respuesta

JulinMolina
3

2 / 3 + x / 4 = 3 / 4 - x / 3

x / 4 + x / 3 = 3 / 4 - 2 / 3

reducimos a comun denominador m.

C. m = 12

(3x + 4x) / 12 = (9 - 8 ) / 12

3x + 4x = 9 - 8

7x = 1

x = 1 / 7 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

2 / 3² = 2x - 8 / 7 + 2³

2 / 9 = 2x –8 / 7 + 8

2x = 2 / 9 + 8 / 7 –8

2x = 14 + 72 – 504 / 63

126 x = - 418

x = - 418 / 126 = - 209 / 63 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

5 / 4 .

3 + x / 4 = 2 / 3 - 2 / 3x

15 / 4 + x / 4 = 2 / 3 –2 / 3 x

x / 4 + 2x / 3 = 2 / 3 – 15 / 4

5 / 3 x = - 37 / 12

60x = - 111

x = - 111 / 60.