23-7y 7y+7y+6+4y How to solve the equation

23-7y 7y+7y+6+4y How to solve the equation

23 7y+6+4y
17 11y
11y 17
y 1.545454545454545454545454545454545

If the solutions of the equations 2x = y + 32kx + (K + 1) y = 10 are opposite to each other, then the value of K is______ ．

According to the meaning of the question, we get x + y = 0, substitute y = - x into the first equation to get 2x = - x + 3, and solve x = 1, so the solution of the equations is x = 1y = − 1, substitute x = 1y = − 1 into the second equation in the equations to get 2K - (K + 1) = 10, and the solution is k = 11. So the answer is 11

If the solutions of the equations {2x-y = 52kx + (K + 1) y = 10} are opposite to each other, then the value of K is equal to
( )
A.8 B.9 C.10 D.11
Sorry, wrong number
If the solutions of the equation {2x-y = 52kx + (K + 1) y = 10 are opposite to each other, then the value of K is equal to
( ）
A.8 B.9 C.10 D.11

The solutions are opposite to each other
y=-x
Substituting
2x-(-x)=5
3x=5
x=5/3
y=-5/3
2kx+(k+1)y=10
10k/3+(k+1)*(-5/3)=10
10k-5k-5=30
5k=35
k=7
It's all wrong

Calculating 9y ^ 2-16 = 0 by factor method

9y^2-16=0
(3y-4)(3y+4)=0
3y-4=0,3y+4=0
y=4/3.y=-4/3