Question

-18=1/2(а-4)-(7+0,5а)-9

Answer 1

- 18 = 1/2 * a - 2 - 7 + 0, 5a - 9

- 18 = 1/2 * a - 2 - 7 - 1/2 * a - 9

- 18 = - 18

Answer 2

To solve the equation -18 = 1/2(a - 4) - (7 + 0.5a) - 9, follow these steps:

1. Distribute the 1/2 on the right side of the equation:

-18 = 1/2(a) - 1/2(4) - (7 + 0.5a) - 9

2. Distribute the negative sign on the right side of the equation:

-18 = 1/2a - 2 - (7 + 0.5a) - 9

3. Combine like terms on the right side:

-18 = (1/2a - 0.5a) - (2 + 7) - 9

4. Combine like terms further:

-18 = (0.5a - 0.5a) - (9)

5. Simplify:

-18 = 0 - 9

6. Further simplify:

-18 = -9

Now, you can see that the equation is not valid because -18 does not equal -9. There may be a mistake in the original equation or the way it was written. Please double-check the equation to ensure it's written correctly.