Question

12 +y=7. - 21 - x=-13​

Answer 1

Пошаговое объяснение:

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Answer 2

Ответ:

У= 7-12

У=-5

Ответ: - 5:

-21-х=-13

-х= - 13+21

-х= 8

Х=-8

Ответ: - 8

Answer 3

Let's solve the given system of equations:

1. $12 + y = 7$
2. $-21 - x = -13$

Step 1: Solve for $y$ in the first equation: $12 + y = 7$

Subtract 12 from both sides to isolate $y$: $y = 7 - 12$

$y = -5$

Step 2: Solve for $x$ in the second equation: $-21 - x = -13$

Add 21 to both sides to isolate $x$: $-x = -13 + 21$

$-x = 8$

Since we want $x$ and not $-x$, multiply both sides by $-1$: $x = -8$

So the solution to the system of equations is $x = -8$ and $y = -5$.