Question

1,2а (а - 7) - 1,8 (3 - а)

Answer 1

Ответ:

1,2а2-8,4а-5,4+1,8а

1,2а2-6,6а-5,4

Answer 2

It looks like you've provided a mathematical expression:

1. $1,2a$ where $a$ is a variable, and
2. $1,8(3 - a)$.

To solve this expression, we can distribute the values within the parentheses and then perform the arithmetic operations.

First, let's distribute the values:

$1,2a$ remains the same.

For $1,8(3 - a)$: $1,8 \times 3$ equals $5.4$, $1,8 \times -a$ equals $-1.8a$.

Now the expression becomes:

$1,2a - 5.4 - 1.8a$.

Combine the $a$ terms:

$1.2a - 1.8a$ equals $-0.6a$.

Now the expression simplifies to:

$-0.6a - 5.4$.

So, the simplified expression is $-0.6a - 5.4$.