(-12)*(-1/2+2/3-5/6)
= 12*(1/2-2/3+5/6)
= 12 /2 - 12x2/3 + 12x5/6
= 6 - 8 + 10
= 8
施主,我看你骨骼清奇,
器宇轩昂,且有慧根,
乃是万中无一的武林奇才.
潜心修习,将来必成大器,
鄙人有个小小的考验请点击在下答案旁的
"选为满意答案"