Well, since you didn't attach your options, then try going with these steps, if we're looking for the value of "x"
[tex]5(2) + 7(x) - 6 = ? [/tex]
[tex]? = 0 [/tex]
[tex]7(x) + 4 = 0 [/tex]
7(x) = -4
= 4 -4
---- ----
3x = 0
÷ 7 ÷7
----- -----
.428x 0
Therefore the value of "x" would have to be: [tex] -\frac{4}{7} [/tex]