ГДЗ по математике 5 класс Ерина рабочая тетрадь Часть 1, 2 Часть 1 | Страница 36

\[\boxed{\mathbf{Страница\ 36.\ }\mathbf{Еуроки\ - \ ДЗ\ без\ мороки}}\]

\[\boxed{\mathbf{3.\ }}\]

\[a - (b + 3) = a - b + 3 \Longrightarrow\]

\[\Longrightarrow неверно\]

\[(40 + x) - y = 40 + (x - y) \Longrightarrow\]

\[\Longrightarrow верно\]

\[(c + b) - a = (c - a) - b \Longrightarrow\]

\[\Longrightarrow неверно\]

\[a - x - y = a - (x + y) \Longrightarrow\]

\[\Longrightarrow верно\]

\[\boxed{\mathbf{4.\ }}\]

\[48 - (17 + a) = 48 - 17 - a =\]

\[= 31 - a\]

\[a - 34 - 22 = a - (34 + 22) =\]

\[= a - 56\]

\[116 - (16 + x) =\]

\[= 116 - 16 - x = 100 - x\]

\[387 - (98 + a) =\]

\[= 387 - 98 - a = 289 - a\]

\[a - 486 - 114 =\]

\[= a - (486 + 114) = a - 600\]

\[b - 77 - 123 =\]

\[= b - (77 + 123) = b - 200\]

\[\boxed{\mathbf{5.\ }}\]

\[52 + x + 33 = x + 52 + 33 =\]

\[= x + (52 + 33) = x + 85\]

\[86 + x + 14 = x + 86 + 14 =\]

\[= x + (86 + 14) = x + 100\]

\[74 + a + 13 = a + 74 + 13 =\]

\[= a + (74 + 13) = a + 87\]

\[c + 82 + 14 = c + (82 + 14) =\]

\[= c + 96\]

\[41 + 28 + a = a + (41 + 28) =\]

\[= a + 69\]

\[\boxed{\mathbf{6.\ }}\]

\[(385 + a) - 213 =\]

\[= (385 - 213) + a =\]

\[= 172 + a\]

\[x - 43 + 50 = (x + 50) - 43 =\]

\[= x + (50 - 43) = x + 7\]

\[(318 + x) - 209 =\]

\[= (318 - 209) + x =\]

\[= 109 + x\]

\[(436 + y) - 186 =\]

\[= (436 - 186) + y =\]

\[= 250 + y\]

\[x - 187 + 379 =\]

\[= (x + 379) - 187 =\]

\[= x + (379 - 187) = x + 192\]

\[a - 426 + 550 =\]

\[= a + (550 - 426) = a + 124\]