Question

Resolver las siguientes ecuaciones:
a) 6 X + 5 = X - 15
b) - 3 X + 2 = 2
c) - 2 X + 9 = 3
d) 7 X = 2. (X - 5)
e) 4 X: (-8)= - 8​

Answer 1

Explicación paso a paso:

a)

$6x + 5 = x - 15 \\ 6x - x = - 15 - 5 \\ 5x = - 20 \\ x = - 4$

b)

$- 3x + 2 = 2 \\ - 3x = 2 - 2 \\ - 3x = 0 \\ x = 0$

c)

$- 2x + 9 = 3 \\ - 2x = 3 - 9 \\ - 2x = - 6 \\ x = 3$

d)

$7x = 2(x - 5) \\ 7x = 2x - 10 \\ 7x - 2x = - 10 \\ 5x = - 10 \\ x = - 2$

e)

$4x \times ( - 8) = - 8 \\ 4x = \frac{ - 8}{ - 8} \\ 4x = 1 \\ x = \frac{1}{4}$