Question

-4 x -27= 2x + 9
2x/4 - 8X/7=4
porfis (╥_╥)

Answer 1

Respuesta:

-4 x -27= 2x + 9

−4−27+27 = 2+9+27

-4x = 2x+9+27

-4x = 2x+36

-4−2 = 2+36−2

-6x = 2x+36-2x

-6x = 36

x = $\frac{36}{-6}$

x =  -6

2x/4 - 8X/7=4

$\frac{x}{2} +\frac{-8x}{7} =4\\ \frac{7x}{14} + \frac{2(-8)x}{14} =4\\ \frac{7x+2(-8)x}{14} =4$

$\frac{7x-16x}{14} = 4\\ \frac{-9x}{14} = 4$

−9 = 14 ⋅ 4

-9x = 56

$x= -\frac{56}{9}$