Question

ECUACIONES:
a) x-9= -1
b) x/5= 2
c) 3x= -12
d) -1= -5x
e) 4= 5x
f) x/3= -1
g) 7= x+4
h) 6+x= -2

Answer 1

Explicación paso a paso:

a)

$x - 9 = - 1 \\ x = - 1 + 9 \\ x = 8$

b)

$\frac{x}{5} = 2 \\ 5 \times 2 = x \\ x = 10$

c)

$3x = - 12 \\ x = \frac{ - 12}{3} \\ x = - 4$

d)

$- 1 = - 5x \\ 1 = 5x \\ x = \frac{1}{5} \\ x = 0.2$

e)

$4 = 5x \\ x = \frac{4}{5} \\ x = 0.8$

f)

$\frac{x}{3} = - 1 \\ x = - 1 \times 3 \\ x = - 3$

g)

$7 = x + 4 \\ x = 4 - 7 \\ x = - 3$

h)

$6 + x = - 2 \\ x = - 2 - 6 \\ x = - 8$