Question

30-х=20 х=30-20 х=10 30-10=20 20=20​

Answer 1

Пошаговое объяснение:

30-х=20

-х=20-30

-х=-10

х=10

30-10=20

Answer 2

Ответ:

Всё верно х=10 молодец 20=20

Answer 3

It looks like you've performed some basic arithmetic operations to solve the equation 30 - x = 20 and found that x = 10. Then, you checked your solution by substituting it back into the equation and verified that it holds true because 30 - 10 = 20, which is indeed true. Your work is correct, and you've solved the equation correctly. Here's a step-by-step breakdown:

1. Start with the equation: 30 - x = 20
2. Subtract 30 from both sides to isolate x: 30 - x - 30 = 20 - 30 -x = -10
3. Divide both sides by -1 to solve for x: (-x) / (-1) = (-10) / (-1) x = 10

So, x = 10 is the correct solution to the equation, and when you substitute it back, you get: 30 - 10 = 20, which is indeed true.