2x + 3y = 45 ............................(1)
x + y = 10 Multiply by -3:-
-3x - 3y = -30 ..........................(2)
Add equations :- (1) + (2) :-
-x = 15
x = -15 (answer)
x=-15 i think this is right i may be wrong though
6.4m questions
8.4m answers