Question

1) (342 + x) − 831 = 420;​

Answer 1

342+х-831=420
342+х=420+831
х=420+831-342
х=909

Answer 2

Ответ:X=909

Пошаговое объяснение:

Answer 3

To solve the equation (342 + x) - 831 = 420, we need to isolate the variable x. Let's go step by step:

1. Start by simplifying the equation: 342 + x - 831 = 420

2. Combine like terms on the left side: x - 489 = 420

3. To isolate x, we want to get rid of the constant term on the left side. We can do this by adding 489 to both sides of the equation: x - 489 + 489 = 420 + 489

4. Simplify both sides: x = 909

Therefore, the solution to the equation (342 + x) - 831 = 420 is x = 909.