Can Du solve this , please ?

69
I've found that it's the answer to most life's questions... well in my life at least.

87. The numbers are upside down.

87

XD Yep. 87

Du start off with the -1 pattern then go to the -10 3 times then Du go back to -1 the other two times. Like Du start off with 91-1=90 then -1 again to get 98 then Du -10 to that to get 88.Then if Du -10 again Du get 78, and after that Du minus ten one Mehr time to get 68.

Yep totally figured it out!(sarcasm)

87

Are Du Blind ? 87 of course

wow, i've never seen this before! i have no clue what the answer is, this is so hard!

just kidding 87 obviously

here ya go

7. The answer is always 7.