2 * ( 7 + 9k ) = -6k + 2
14 + 18k = -6k + 2
18k + 6k = 2 - 14
24k = -12
k =
14+18k=6k+2
18-6k=2-14
12k=-12
k=-1
2 * ( 7 + 9k ) = -6k + 2
14 + 18k = -6k + 2
18k + 6k = 2 - 14
24k = -12
k =
14+18k=6k+2
18-6k=2-14
12k=-12
k=-1