Question

por favor com conta vale minha nota
b)x - x/7 = - 6/7
c)x/9 + x/4 = 1/2
d)x + 12/3 = x - 5/4
e)x + 4/2 - x + 8/3 = x - 1/5​

Answer 1

Resposta:

B)

$x - \frac{x}{7} = \frac{ - 6}{7}$

7x-x= -6

6x= -6

x= -6÷6

x= -1

c)

$\frac{x}{9} + \frac{x}{4} = \frac{1}{2}$

4x+9x=18

13x=18

x=

$\frac{18}{13}$

e)x= -70/3