Question

1 1/16(4x − 16) −7 1/3(x − 6) при x = 4,2.

Answer 1

Ответ:

$\frac{11}{16} \times (4 \times 4.2 - 16) - 7 \times \frac{1}{3} (4.2 - 6) = \frac{11}{16} \times (16.8 - 16) - \frac{22}{3} \times ( - 1.8) = \frac{11}{16} \times 0.8 - \frac{22}{3} \times ( - 1.8) = \frac{11}{16} \times \frac{4}{5} + 22 \times \frac{3} {5} = \frac{11}{4} \times \frac{1}{5} + \frac{66}{5} = \frac{11}{20} + \frac{66}{5} = \frac{11}{20} + \frac{264}{20} = \frac{275}{20} = \frac{55}{4}$

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