Question

Give wrong answers
2+2=?
4+5=?
1-1=?​

Answer 1

$\qquad \sf \mapsto \: 2 + 2 = 4... \\ \qquad \sf \mapsto \: 4 + 5 = 9... \\ \qquad \sf \mapsto \: 1 - 1 = 0...$

Answer 2

$2 + 2 = 4 \\ 4 + 5 = 9 \\ 1 - 1 = 0$