Question

a) 9x − 4 = 7x + 2
b) 9x − 5 = 6x + 1
c) 5x − 4 = 2x + 8

alguien me ayuda a resolver las ecuaciones?

Answer 1

Respuesta:

a. 9x - 4 = 2x

9x - 2x = 4

6x = 4

x = 4/6.

b. 4x - 9x + 2 = 7x - 5x - 9

-5x + 2 = 2x - 9

2 + 9 = 2x + 5x

11 = 7x

11/7 = x.

c. 4x - 7x + 5 = 2 - 4 (3x + 1)

-3x + 5 = 2 - 12x - 4

-3x + 5 = - 12x - 2

-3x + 12x = -2 -5

9x = -7

x = -7/9.

d. 3x + (2x -3) = 7 (x - 2) - x

3x + 2x - 3 = 7x - 14 -x

5x - 3 = 6x - 14

-3 + 14 = 6x - 5x

11 = x.

Explicación paso a paso:

dame coronita porfa