### How to find $$k$$ in system of equations ?

This is a y^2=x^3+7 elliptic curve points - Q,G_1,G_2,G_3. k_1,k_2,k? - secret exponents:

k_1*G1( x_1,y_1) = Q(X,Y)

k_2*G2( x_2,y_2) = Q(X,Y)

k?*G3( x_3,y_3) = Q(X,Y)

How to find a "k?" ???

Q,G_1,G_2,G_3. k_1,k_2 - are known

k? - need to find.

Big Thank You