Let \(A\) and \(B\) be the supplementary angles.
\(A+B = 180\)
\(2A = B-69\)
\(B = 2A +69\)
\(A + 2A +69 = 180\)
\(3A + 69 = 180 \)
\(A = 37^o\)
\(B = 143^o\)