Question

solve Y 23x-29y=98 and 29x -23y=110

Answer 1

(23x-29y=98)x23
(29x-23y=110)x29

529x-667y=2254
841x-667y=3190
subtracting it

529x-667y=2254
-841x+667y=-3190

so

-312x=-936
x=3

so after subsituting

69-29y=98
y=-1

Answer 2

23x=98+29y
x=98+29y/23
Now
29×98+29y/23-23y=110
2842+841y/23-23y/1=110
2842+841y-529y/23=110/1
2842-48y=2530
-48y=-312
y=6.5