Question

1000х +2000(20-х)=28000

Answer 1

1000х + 40000 - 2000х = 28000
-1000х = -12000
х = 12

Answer 2

$1000x + 2000(20 - x) = 28000 \\ 1000x + 40000 - 2000x = 28000 \\ - 1000x = 28000 - 40000 \\ - 1000x = - 12000 \\ x = - 12000 \div ( - 1000) \\ x = 12$

Всё сделано лично мной. Копирование запрещено©

Answer 3

To solve the equation, follow these steps:

1. Distribute the 2000 term: 1000x + 2000 * 20 - 2000x = 28000

2. Combine like terms: 1000x - 2000x + 40000 = 28000

3. Simplify: -1000x + 40000 = 28000

4. Move the constant term to the other side of the equation: -1000x = 28000 - 40000

5. Simplify: -1000x = -12000

6. Finally, isolate x by dividing both sides by -1000: x = -12000 / -1000 x = 12

So, the solution to the equation is x = 12.