rainny

如果我用以下呢個 EQUATION 去 PROVE 可能會明O的~~


假設 ANSWER 係 9~

6/2a = 9
3a = 9
a = 3 = (2+1)

所以...6÷2(1+2) = 9 係成立O既


假設 ANSWER 係 1

6/2a = 1
3a = 1
a = 1/3 ≠ (2+1)

所以... 6÷2(1+2) = 1 係不成立O既

咁所以~
ANSWER 只能夠係 9~~