Question

213. Решите уравнения пожалуйста помогите​

Answer 1

Пошаговое объяснение:

1)2х/36=5/6 3)7/21=3х/54 5)8/5=4х/15

х/18=5/6 1/3=х/18 20х=120

6х=90 3х=18 х=6

х=15 х=6

2)4/9=3х/54 4)11/33=2/3х 6)9/16=3х/64

4/9=х/18 1/3=2/3х 48х=576

72=9х 3х=6 х=12

х=8 х=2

Answer 2

1)

$\frac{2x}{36 } = \frac{5}{6} \\ 2x = \frac{36 \times 5}{6} \\ 2x = 30 \\ x = 15$

2)

$\frac{4}{9} = \frac{3x}{54} \\ 3x = \frac{4 \times 54}{9} \\ 3x =24 \\ x = 8$

3)

$\frac{7}{21} = \frac{3x}{54} \\ 3x = \frac{7 \times 54}{21} \\ 3x = 18 \\ x = 6$

4)

$\frac{11}{33} = \frac{2}{3x} \\ 3x = \frac{33 \times 2}{11} \\ 3x = 6 \\ x = 2$

5)

$\frac{8}{5} = \frac{4x}{15} \\ 4x = \frac{8 \times 15}{5} \\ 4x = 24 \\ x = 12$

6)

$\frac{9}{16} = \frac{3x}{64} \\ 3x = \frac{9 \times 64}{16} \\ 3x = 36 \\ x = 12$