Question

434. Решите уравнения: 1) 9/16 - x = 1/2 2) x + 2/3 = 7/8 3) 1/2 + x = 23/24 4) x - 3/8 = 1/4•
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дам 25 баллов.​

Answer 1

Ответ:

$\frac{9}{16} - x = \frac{1}{2} \\ x = \frac{9}{16} - \frac{1}{2} = \frac{9 - 8}{16} = \frac{1}{16}$

$x + \frac{2}{3} = \frac{7}{8} \\ x = \frac{7}{8} - \frac{2}{3} = \frac{7 \times 3 - 2 \times 8}{24} = \frac{5}{24}$

$\frac{1}{2} + x = \frac{23}{24} \\ x = \frac{23}{24} - \frac{1}{2} = \frac{21 - 12}{24} = \frac{3}{8}$

$x - \frac{3}{8} = \frac{1}{4} \\ x = \frac{1}{4} + \frac{3}{8} = \frac{2 + 3}{8} = \frac{5}{8}$

Answer 2

9/16 - x = 1/2

x=9/16-1/2

x=1/16

x + 2/3 = 7/8

x=7/8 - 2/3

x=5/24

1/2 + x = 23/24

x=23/24 - 1/2

x=11/24

x - 3/8 =1/4

x=3/8 - 1/4

x=5/8