\[\boxed{\text{4.\ 172}}\]
\[\textbf{а)} - 46 + ( - 8) = - (46 + 8) =\]
\[= - 54\]
\[\textbf{б)} - 5 + ( - 29) = - (5 + 29) =\]
\[= - 34\]
\[\textbf{в)} - 36 + ( - 9) = - (36 + 9) =\]
\[= - 45\]
\[\textbf{г)} - 4 + ( - 127) =\]
\[= - (4 + 127) = - 131\]
\[\textbf{д)} - 63 + ( - 27) =\]
\[= - (63 + 27) = - 90\]
\[\textbf{е)} - 8 + ( - 37) = - (8 + 37) =\]
\[= - 45\]