Question

$\frac{x}{4} + \frac{x}{3} = \frac{x}{6} + 5$
$\frac{2x}{3} - \frac{4x}{5} = \frac{x}{15} + 1$
$\frac{3x}{8} - \frac{x}{6} = \frac{x}{12} - 1$
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Answer 1

Ответ:

Пошаговое объяснение:

x/4 + x/3 = x/6 + 5 |*12

3x + 4x = 2x + 60

7x = 2x + 60

7x - 2x = 60

5x = 60

x = 60:5

x = 12

=================

(2x)/3 - (4x)/5 = x/15 + 1 |*15

10x - 12x = x + 15

-2x = x + 15

x + 2x = -15

3x = -15

x = -15:3

x = -5

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(3x)/8 - x/6 = x/12 - 1 |*24

9x - 4x = 2x - 24

5x = 2x - 24

5x - 2x = -24

3x = -24

x = -24:3

x = -8