Question

1) 10x + 7 = 8x - 9;​

Answer 1

10x+7=8x-9

10x-8x=-9-7

2x=-16

x=-8

Ответ: x=-8

Answer 2

To solve for x in the given equation, you'll need to isolate x on one side. Follow these steps:

1. Subtract 8x from both sides of the equation: 10x + 7 - 8x = 8x - 9 - 8x 2x + 7 = -9

2. Subtract 7 from both sides of the equation: 2x + 7 - 7 = -9 - 7 2x = -16

3. Finally, divide both sides by 2 to solve for x: 2x / 2 = -16 / 2 x = -8

So, the solution for the equation 10x + 7 = 8x - 9 is x = -8.