Ответ: Решения уравнений и выражений ниже:
-4 + x = 12
x = 12 + 4
x = 16
8 - y = 25.1
-y = 25.1 - 8
-y = 17.1
y = -17.1
-12.1 + x = -3.1
x = -3.1 + 12.1
x = 9
-7 * x = 49
x = 49 / -7
x = -7
y * 8 = -3.2
y = -3.2 / 8
y = -0.4
-\[\frac{1}{3}\] * x = \{\frac{6}{7}\}
x = \{\frac{6}{7}\} / (-\[\frac{1}{3}\])
x = \{\frac{6}{7}\} * (-3)
x = -\{\frac{18}{7}\}
x = -2 \{\frac{4}{7}\}
(5 \{\frac{1}{4}\} - 6 \{\frac{1}{6}\}) * (3 \{\frac{1}{4}\} - 0.55) =
= (\{\frac{21}{4}\} - \{\frac{37}{6}\}) * (\{\frac{13}{4}\} - \{\frac{55}{100}\}) =
= (\{\frac{63}{12}\} - \{\frac{74}{12}\}) * (\{\frac{325}{100}\} - \{\frac{55}{100}\}) =
= (-\{\frac{11}{12}\}) * \{\frac{270}{100}\} =
= (-\{\frac{11}{12}\}) * \{\frac{27}{10}\} =
= -\{\frac{297}{120}\} = -\{\frac{99}{40}\} = -2 \{\frac{19}{40}\}
= -2.475
\{\frac{4}{7}\} * (-5 \{\frac{5}{6}\}) - \{\frac{5}{62}\} * (-4 \{\frac{3}{7}\}) =
= \{\frac{4}{7}\} * (-\{\frac{35}{6}\}) - \{\frac{5}{62}\} * (-\{\frac{31}{7}\}) =
= -\{\frac{140}{42}\} + \{\frac{155}{434}\} =
= -\{\frac{10}{3}\} + \{\frac{5}{14}\} = -\{\frac{140}{42}\} + \{\frac{15}{42}\} = -\{\frac{125}{42}\} = -2 \{\frac{41}{42}\}
= -2.976
(2 \{\frac{1}{3}\} - 1 \{\frac{2}{3}\} * 0.75) : (-4 \{\frac{1}{3}\}) + \{\frac{1}{8}\} =
= (\{\frac{7}{3}\} - \{\frac{5}{3}\} * \{\frac{3}{4}\} ) : (-\{\frac{13}{3}\}) + \{\frac{1}{8}\} =
= (\{\frac{7}{3}\} - \{\frac{5}{4}\}) : (-\{\frac{13}{3}\}) + \{\frac{1}{8}\} =
= (\{\frac{28}{12}\} - \{\frac{15}{12}\}) : (-\{\frac{13}{3}\}) + \{\frac{1}{8}\} =
= \{\frac{13}{12}\} : (-\{\frac{13}{3}\}) + \{\frac{1}{8}\} =
= \{\frac{13}{12}\} * (-\{\frac{3}{13}\}) + \{\frac{1}{8}\} =
= -\{\frac{39}{156}\} + \{\frac{1}{8}\} =
= -\{\frac{1}{4}\} + \{\frac{1}{8}\} =
= -\{\frac{2}{8}\} + \{\frac{1}{8}\} = -\{\frac{1}{8}\}
= -0.125
Ответ: Решения уравнений и выражений выше:
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