2(4-10x)=-(-2-6x)
use distributive property to get
8 - 20x = 2 + 6x
subtract 8 from both sides to get
-20x = 2 - 8 + 6x
subtract 6x from both sides to get
-20x - 6x = -6
multiply both sides by -1 to get
20x + 6x = 6
collect like terms to get
26x = 6
divide both sides by 26 to get
x = 6/26 or 3/13