Question

(a-0,9)-(3a-1,9)= срочно

Answer 1

(a-0,9)-(3a-1,9)=а-0,9-3а+1,9=-2а+1

Answer 2

Раскроем скобки:
а-0,9-3а +1,9
Сокращаем:
-2а+1

Answer 3

To simplify the expression (a - 0.9) - (3a - 1.9), follow these steps:

Step 1: Distribute the negative sign to the terms inside the second parentheses: (a - 0.9) - 3a + 1.9

Step 2: Group the like terms together: a - 3a - 0.9 + 1.9

Step 3: Combine the like terms: (1 - 3)a + (1.9 - 0.9)

Step 4: Simplify further: -2a + 1

So, the simplified expression is -2a + 1.