Question

For what value of k will the two equation 2x+4=4(x-2) and -x + k =2x- 1will

Answer 1

2x+4=4x-8(given)
2x=4+8
2x=12
x=6
-x+k=2x-1(given)
k=3x-1
k=3×6-1
k=18-1=17
answer is 17.

Answer 2

from ..1st equation...x = 6 ..
then ...put the value of x in equation 2. then ....k = 17