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Hallar el valor de la xa)7x - 8 + 2x = 4x + 17b)21 + 10x - 19 = 7x + 30 - 4xc)5(x + 2) + 2x = 4x + 31d)3(x + 7) + 2(x + 3) = x + 39e)4(3x + 1) - x = 3x + 20f)2(3 + 6x) - 5 = 7(x + 8)?

Hallar el valor de la x a)7x - 8 + 2x = 4x + 17 b)21 + 10x - 19 = 7x + 30 - 4x c)5(x + 2) + 2x = 4x + 31 d)3(x + 7) + 2(x + 3) = x + 39 e)4(3x + 1) - x = 3x + 20 f)2(3 + 6x) - 5 = 7(x + 8).

En resumen

A) 7x - 8 + 2x = 4x + 17 9x - 8 = 4x + 17 X = 5 B)21 + 10x - 19 = 7x + 30 - 4x 7x = 28 X = 4 C)5(x + 2) + 2x = 4x + 31 5x + 10 + 2x = 4x + 31 7x + 10 = 4x + 31 .

Mejor respuesta

Bomberorivero
9

A) 7x - 8 + 2x = 4x + 17

9x - 8 = 4x + 17

X = 5

B)21 + 10x - 19 = 7x + 30 - 4x

7x = 28

X = 4

C)5(x + 2) + 2x = 4x + 31

5x + 10 + 2x = 4x + 31

7x + 10 = 4x + 31 .

3x = 21

X = 7

D) 3x + 21 + 2x + 6 = x + 39

5x + 27 = x + 39

4x = 12

X = 3

E)22x + 4 - x = 3x + 20

11x + 4 = 3x + 20

8x = 16

X = 2

F)6 + 12x - 5 = 7x + 56

5x = 55

X = 11.