Question

Решите уравнение :
a) 31,6x + 5,4x + 5,6 = 116,6
Б) 12 - (3x - 1 5/12) = 10 7/24

Answer 1

1)31,6х+5,4х=116,6-5,6

37х=111

х= 111:37

х=3

Answer 2

а) 31,6x + 5,4x = 116,6 - 5,6

37х=111

$x = frac{111}{37}$

х=3

Ответ:х=3

Б)

$12 - (3x - frac{17}{12} ) = frac{247}{24}$

$12 - 3x + frac{17}{12} = frac{247}{24}$

$- 3x = frac{247}{24} - 12 - frac{17}{12}$

$- 3x = frac{247}{24} - frac{161}{12}$
-3х=247/24-322/24
-3х=-75/24

$- 3x = - frac{25}{8}$

$3x = frac{25}{8}$

$x = frac{25}{8} div frac{3}{1} = frac{25}{8} times frac{1}{3} = frac{25}{24} = 1 frac{1}{24}$

Ответ:х=1 1/24