Question

Самостійна робота

• Спростити
1)6/ 49 a* 7 /18 b;
2)4 4 /9 x* 5 /8 -y;
3)3/8 x + 4/9 x - 5/12 х

Answer 1

Ответ:-4 + x = 12

x = 12 + 4

x = 16

-4 - x = -12

-x = -12 + 4

-x = -8

x = 8

x - 4 = -12

x = -12 + 4

x = -8

4x = -12

x = -12 / 4

x = -3

-4 : x = 12

x * (-4 : x) = x * 12

-4 = 12x

x = -4/12

x = -1/3

x : (-4) = -12

x = -12 * (-4)

x = 48

0,5x = -0,35

x = -0,35 / 0,5

x = -0,7

-²x = 15 816

x = 15 816 / (-²)

x = -99

Нет уравнения

Нет уравнения

-16(x - 7) = -48

16(x - 7) = 48

x - 7 = 3

x = 3 + 7

x = 10

12(x + 5) = -24

x + 5 = -2

x = -2 - 5

x = -7

3(6 - x) - 2(x - 5) = 63

18 - 3x - 2x + 10 = 63

28 - 5x = 63

-5x = 35

x = -7

7(5 - x) - 3(x + 4) = 63

35 - 7x - 3x - 12 = 63

23 - 10x = 63

-10x = 40

x = -4

Пошаговое объяснение: