Question

найдите значения выражения; 2) 2,13-6,8-0,64; 4) -14,37-11,64-(-23,85)+(-18,03); 6) 4 2/3-(-3 3/4)+(-2 5/6)-5 1/8

Answer 1

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Answer 2

2. 2,13 - 6,8 - 0,64 = -5.31
3. -14,37 - 11,64 - (-23,85) + (-18,03) = -4.89 To simplify this expression, we can first eliminate the double negative by changing "-(-23.85)" to "+23.85": -14.37 - 11.64 + 23.85 - 18.03 = -19.19 Therefore, the value of the expression is -19.19.
4. To simplify this expression, we need to convert all mixed numbers to improper fractions: 4 2/3 = (43 + 2)/3 = 14/3 -3 3/4 = (-34 + 3)/4 = -9/4 -2 5/6 = (-26 + 5)/6 = -7/6 5 1/8 = (58 + 1)/8 = 41/8

Now we can substitute the values and combine like terms: 14/3 - (-9/4) + (-7/6) - 41/8 = 56/12 + 27/12 + 14/12 - 123/12 = -26/12 = -13/6

Therefore, the value of the expression is -13/6.