Question

СРОЧНО решите уравнение​

Answer 1

Ответ: 3) x = 12 4) x = 3/2, 1 1/2 , 1,5

Пошаговое объяснение:

3) (7/8 - 0,2) • x = (7/8 - 1/5) • x = 8,1

7/8 - 1/5=27/40

27/40x = 8,1

x= 40/27 × 8,1

x= 40/27 × 81/10

x= 4 × 3

x = 12

4) (4-2 3/7) • x = 2 5/14

(4-17/7) • x = 33/14

11/7 • x = 33/14

x = 3/2

x= 1 1/2,x= 1,5

Answer 2

3)

$\frac{7}{8} - \frac{1}{5} = \frac{35 - 8}{40} = \frac{27}{40} \times x = \frac{27}{40}x$

$8.1 =8 \frac{1}{10} = \frac{81}{10}$

$\frac{27}{40}x = \frac{81}{10} \\ x = \frac{81}{10} \times \frac{40}{27} \\ x = 12$

4)

$2 \frac{3}{7} = \frac{17}{7}$

$2 \frac{5}{14} = \frac{33}{14}$

$\frac{4}{1} - \frac{17}{7} = \frac{28 - 7}{7} = \frac{11}{7} \times x = \frac{11}{7}x$

$\frac{11}{7}x = \frac{33}{14} \\ x = \frac{33}{14} \times \frac{7}{11} \\ x = \frac{3}{2}ili1 \frac{1}{2}$

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