Найдите значение выражения: 1)-27+68-56 + 61; 2) 4,17 – 9,42 + 0,2; 3) 3,1 + (-4,72) + (-8,12) – (-0,96); 4)-18,31 – 6,27 + (-8,44) – (-31,67); 5) 6-(-4)+(-2);

Пример 1:

\[-27+68-56 + 61 = 41 - 56 + 61 = -15 + 61 = 46\]

Пример 2:

\[4.17 – 9.42 + 0.2 = -5.25 + 0.2 = -5.05\]

Пример 3:

\[3.1 + (-4.72) + (-8.12) – (-0.96) = 3.1 - 4.72 - 8.12 + 0.96 = -1.62 - 8.12 + 0.96 = -9.74 + 0.96 = -8.78\]

Пример 4:

\[-18.31 – 6.27 + (-8.44) – (-31.67) = -18.31 - 6.27 - 8.44 + 31.67 = -24.58 - 8.44 + 31.67 = -33.02 + 31.67 = -1.35\]

Пример 5:

\[6\frac{5}{12} - (-4\frac{2}{3}) + (-2\frac{3}{4}) = 6\frac{5}{12} + 4\frac{2}{3} - 2\frac{3}{4} = 6\frac{5}{12} + 4\frac{8}{12} - 2\frac{9}{12} = 10\frac{13}{12} - 2\frac{9}{12} = 11\frac{1}{12} - 2\frac{9}{12} = 8\frac{4}{12} = 8\frac{1}{3}\]