Question

Z=7+y z−2y+1=5 Ответ: z= y=

Answer 1

Ответ:

у=3

z=10

Объяснение:

z=7+y

z=2y-1+5

z=2y+4

2y+4=7+y

2y-y=7-4

y=3

z=7+3

z=10

Answer 2

To find the values of $y$ and $z$ that satisfy the given equations $z = 7 + y$ and $z - 2y + 1 = 5$, we can substitute the expression for $z$ from the first equation into the second equation and solve for $y$.

Given:

1. $z = 7 + y$
2. $z - 2y + 1 = 5$

Substitute $z$ from the first equation into the second equation:

$(7 + y) - 2y + 1 = 5$

Combine like terms:

$8 - y = 5$

Subtract 8 from both sides:

$-y = -3$

Multiply both sides by -1 to solve for $y$:

$y = 3$

Now that we have the value for $y$, substitute it back into the first equation to find $z$:

$z = 7 + y$

$z = 7 + 3$

$z = 10$

Therefore, the solution is $y = 3$ and $z = 10$.