Question

10x + y - 9 = 10y + x
pls step by step Sol fst​

Answer 1

Step-by-step explanation:

10x+y-9=10y+x

=>10x-x+y-10y=9

=>9x-9y=9

=>x-y=1

Answer 2

Step-by-step explanation:

$10x - x + y - 10y - 9 = 0 \\ 9x - 9y - 9 = 0 \\ eq \: \div by \: 9 \\ x - y - 1 = 0$