Question

800-х=200 ×+400=1000 19+×=25 с-12=65

Answer 1

Ответ:

1)-х=800-200

-х=600

х=-600

2)

х=1000-400

х=600

3)х=25-19

х=6

4)с=65+12

с=77

Answer 2

Пошаговое объяснение:

800-х = 200

х = 800-200

х = 600

Проверка :

800 - 600 = 200

х + 400 = 1000

х=1000 - 400

х= 600

Проверка :

600 + 400 = 1000

19 + х = 25

х = 25 - 19

х = 6

Проверка :

19 + 6 = 25

с - 12 = 65

с = 65 + 12

с = 77

Проверка :

77 - 12 = 65

Answer 3

It seems like you've provided a series of mathematical equations. Let's solve each of them step by step:

1. 800 - x = 200x + 400 = 1000 Let's solve for 'x': 800 - x = 200x + 400 Subtract 200x from both sides: 800 - 200x - x = 400 Combine like terms: 800 - 201x = 400 Subtract 800 from both sides: -201x = 400 - 800 -201x = -400 Now, divide by -201 to find the value of 'x': x = -400 / -201 x ≈ 1.99

2. 19 + x = 25 Let's solve for 'x': Subtract 19 from both sides: x = 25 - 19 x = 6

3. c - 12 = 65 Let's solve for 'c': Add 12 to both sides: c = 65 + 12 c = 77

Please verify your answers by plugging the calculated values of 'x' and 'c' back into their respective equations to make sure they satisfy the original equations.