1. Вычислите: -34 + 16 · 6.

1. $-34 + 16 \cdot 6 = -34 + 96 = 62$ 2. $-33 + 85 : 5 = -33 + 17 = -16$ 3. $19 \cdot (-5) + 58 = -95 + 58 = -37$ 4. $1 - \frac{4}{7} : \frac{16}{21} = 1 - \frac{4}{7} \cdot \frac{21}{16} = 1 - \frac{1 \cdot 3}{1 \cdot 4} = 1 - \frac{3}{4} = \frac{1}{4} = 0,25$ 5. $(5,1 - 7,9) : 40 = -2,8 : 40 = -0,07$ 6. $(\frac{6}{5} - \frac{3}{4}) \cdot \frac{2}{3} = (\frac{24}{20} - \frac{15}{20}) \cdot \frac{2}{3} = \frac{9}{20} \cdot \frac{2}{3} = \frac{3 \cdot 1}{10 \cdot 1} = \frac{3}{10} = 0,3$ 7. $1,54 + 0,5 \cdot (-1,3) = 1,54 - 0,65 = 0,89$ 8. $\frac{9}{14} \cdot (\frac{17}{24} - \frac{5}{12}) = \frac{9}{14} \cdot (\frac{17}{24} - \frac{10}{24}) = \frac{9}{14} \cdot \frac{7}{24} = \frac{3 \cdot 1}{2 \cdot 8} = \frac{3}{16} = 0,1875$ 9. $(-6,9 + 2,1) : 2,4 = -4,8 : 2,4 = -2$ 10. $4x - (x + 3)$ при $x = -5$: $4(-5) - (-5 + 3) = -20 - (-2) = -20 + 2 = -18$ 11. $-5x - |11 - 7x|$ при $x = 7$: $-5(7) - |11 - 7(7)| = -35 - |11 - 49| = -35 - |-38| = -35 - 38 = -73$ 12. $3x - |6x + 15|$ при $x = -7$: $3(-7) - |6(-7) + 15| = -21 - |-42 + 15| = -21 - |-27| = -21 - 27 = -48$