Вопрос:

3)-(+2,吋)+(-35)-(-1)-(+5)=

Ответ:

Let's solve the expression step by step: $$3 - (+2 \frac{1}{2}) + (-3 \frac{1}{3}) - (-1) - (+5) =$$ First, convert the mixed numbers to improper fractions: $$2 \frac{1}{2} = \frac{2*2 + 1}{2} = \frac{5}{2}$$ $$3 \frac{1}{3} = \frac{3*3 + 1}{3} = \frac{10}{3}$$ Now, substitute these values into the expression: $$3 - (+\frac{5}{2}) + (-\frac{10}{3}) - (-1) - (+5) =$$ $$3 - \frac{5}{2} - \frac{10}{3} + 1 - 5 =$$ Group the whole numbers: $$3 + 1 - 5 - \frac{5}{2} - \frac{10}{3} =$$ $$-1 - \frac{5}{2} - \frac{10}{3} =$$ Find a common denominator for the fractions (which is 6): $$-1 - \frac{5*3}{2*3} - \frac{10*2}{3*2} =$$ $$-1 - \frac{15}{6} - \frac{20}{6} =$$ Combine the fractions: $$-1 - \frac{15+20}{6} =$$ $$-1 - \frac{35}{6} =$$ Convert -1 to a fraction with a denominator of 6: $$-\frac{6}{6} - \frac{35}{6} =$$ Combine the fractions: $$\frac{-6 - 35}{6} =$$ $$\frac{-41}{6} =$$ Convert the improper fraction to a mixed number: $$-6 \frac{5}{6}$$ So, the final answer is: $$ 3 - (+2 \frac{1}{2}) + (-3 \frac{1}{3}) - (-1) - (+5) = -6 \frac{5}{6} $$ Answer: $$-6 \frac{5}{6}$$
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