Question

999x+888x=1332 and 888x+999x=555 then what is (x+y)

Answer 1

x + y = 7 hope it help you

Answer 2

999x+888y=1332
888x+999y=555

111(9x+8y)=1332
9x+8y=1332/111
9x+8y=12. eq1

888x+999y=555
111(8x+9y)=555
8x+9y=555/111
8x+9y=5. eq2

solve the equation 1 and 2
then x= 4
Y= -3

then (x+y)
(4+-3)
(4-3)
(x+y)= 1 answer