Question

Tge following simultaneous equations are written in base two
11x + 10y=10001
10x+y=10
Solve the equation leaving your answer in base two.

Answer 1

double the 2nd equation and you have
11x + 10y = 10001
100x + 10y = 100
subtract to eliminate y.
-x = 1101
now finish it off

Answer 2

Don't know it