It is known that the solution of the equation 2 / 1 (1-x) = 1 + K and the solution of the equation 4 / 3 (x-1) - 5 / 2 (3x + 2) = 10 / K-2 / 3 (x-1) are opposite to each other, so the value of K can be obtained

It is known that the solution of the equation 2 / 1 (1-x) = 1 + K and the solution of the equation 4 / 3 (x-1) - 5 / 2 (3x + 2) = 10 / K-2 / 3 (x-1) are opposite to each other, so the value of K can be obtained

(1-x)/2=1+k,——》x=-2k-1,
3(x-1)/4-2(3x+2)/5=k/10-3(x-1)/2,——》x=(61+2k)/21,
——》-2k-1+(61+2k)/21=0,
——》k=1.