\[\boxed{\mathbf{Страница\ 24.\ }\mathbf{Еуроки\ - \ ДЗ\ без\ мороки}}\]
\[\boxed{\mathbf{1.\ }}\]
\[\mathbf{1.}\]
\[T \cap S = \left\{ 7;b \right\}.\]
\[\mathbf{2.}\]
\[\textbf{а)}\ k\ :5 \cdot 7\ (м)\]
\[\textbf{б)}\ 4a - a\ (кг)\ \]
\[\mathbf{3.}\]
\[\textbf{а)}\ (536 + 295) + 64 =\]
\[= (536 + 64) + 295 =\]
\[= 600 + 295 = 895\]
\[\textbf{б)}\ 17 + 358 + 83 + 142 =\]
\[= (17 + 83) + (358 + 142) =\]
\[= 100 + 500 = 600\]
\[\textbf{в)}\ 2 \cdot 19 \cdot 5 \cdot 4 = 2 \cdot 5 \cdot 4 \cdot 19 =\]
\[= 10 \cdot 76 = 760\]
\[\textbf{г)}\ 4 \cdot 7 \cdot 25 = 7 \cdot 25 \cdot 4 =\]
\[= 7 \cdot 100 = 700\]
\[\mathbf{4.}\]
\[\boxed{\mathbf{2.\ }}\]
\[\mathbf{1.}\]
\[B \cap C = \left\{ 5;k \right\}.\]