\[\mathbf{Страница\ 50.}\]
\[\boxed{\mathbf{1.}}\]
\[противоположное.\]
\[\boxed{\mathbf{2.}}\]
\[Противоположное\ число:\]
\[- 2,\ - 10,\ 4,\ 17,\ 0,\ - 56,\ 14.\]
\[Противоположное\ число:\]
\[10,\ - 5,\ 24,\ - 13,\ 2,\ - 64,\ 37.\]
\[\boxed{\mathbf{3.}}\]
\[\textbf{а)}\ 15 - 16 = 15 + ( - 16) = - 1\]
\[\textbf{б)}\ 17 - ( - 19) = 17 + 19 = 36\]
\[\textbf{в)} - 19 - 18 = 19 + ( - 18) = 1\]
\[\textbf{г)} - 17 - ( - 19) = - 17 + 19 =\]
\[= 2\]
\[\textbf{д)}\ 46 - 60 = 46 + ( - 60) = - 14\]
\[\textbf{е)} - 59 - ( - 60) = - 59 + 60 =\]
\[= 1\]
\[\textbf{ж)}\ 28 - ( - 34) = 28 + 34 = 62\]
\[\textbf{з)}\ 17 - 23 = 17 + ( - 23) = - 6\]
\[\textbf{и)}\ 27 - ( - 13) = 27 + 13 = 40\]
\[к)\ 100 - 200 = 100 + ( - 200) =\]
\[= - 100\]
\[\boxed{\mathbf{4.}}\]
\[\textbf{а)}\ 14 - 17 = - 3\]
\[- 3 + 17 = 14\]
\[\textbf{б)} - 8 - ( - 3) = - 5\]
\[- 5 + ( - 3) = - 8\]
\[\textbf{в)} - 3 - ( - 8) = 5\]
\[5 + ( - 8) = - 3\]
\[\textbf{г)}\ 10 - ( - 2) = 12\]
\[12 + ( - 2) = 10\]
\[\textbf{д)}\ 0 - 5 = - 5\]
\[- 5 + 5 = 0\]
\[\textbf{е)}\ 0 - ( - 7) = 7\]
\[7 + ( - 7) = 0\]
\[\textbf{ж)} - 19 - ( - 32) = 13\]
\[13 + ( - 32) = - 19\]
\[\textbf{з)}\ 13 - ( - 25) = 38\]
\[38 + ( - 25) = 13\]
\[\textbf{и)} - 31 - 6 = - 37\]
\[- 37 + 6 = - 31\]
\[к) - 9 - ( - 7) = - 2\]
\[- 2 + ( - 7) = - 9\]