Question

4). 5 – 2(x - 1)-(-4- x)= 6). (3,4 + 2y) - 7(y – 2,3)=

Answer 1

Ответ:

Пошаговое объяснение:

4). 5 – 2(x - 1)-(-4- x)= 5 - 2x + 2 + 4 + x = 11 - x

6). (3,4 + 2y) - 7(y – 2,3)= 3,4 + 2y - 7y + 16,1 = 19,5 - 5y

Answer 2

4) 3x + 7
6)-5y+19,5
Оставляется выражением

Answer 3

Let's solve each equation step by step:

4) $5 - 2(x - 1) - (-4 - x)$

First, simplify the expression inside the parentheses:

$5 - 2x + 2 - (-4 - x)$

Next, distribute the negative sign inside the second set of parentheses:

$5 - 2x + 2 + 4 + x$

Combine like terms:

$-2x + x + 11$

$-x + 11$

The first equation simplifies to:

$-x + 11 = 0$

Now, let's solve for $x$:

$-x = -11$

$x = 11$

6) $(3,4 + 2y) - 7(y – 2,3)$

First, distribute the 7 inside the second set of parentheses:

$3,4 + 2y - 7y + 16,1$

Combine like terms:

$-5y + 19,5$

The second equation simplifies to:

$-5y + 19,5 = 0$

Now, let's solve for $y$:

$-5y = -19,5$

$y = 3,9$

So, the solutions to the given equations are:

$x = 11$ and $y = 3,9$.