Решите уравнение: 4 - 0,5(x + 9) = -2,1.

Step 1: Distribute -0.5 to the terms inside the parentheses.

4 - 0.5x - 4.5 = -2.1

Step 2: Combine like terms.

-0.5x - 0.5 = -2.1

Step 3: Isolate the term with x.

-0.5x = -2.1 + 0.5

-0.5x = -1.6

Step 4: Solve for x.

x = -1.6 / -0.5