cách tinh so hưu ti

F

foreverlove_hero_97

(x-1/3).9/5=2/5
x-1/3=2/5:9/5
x-1/3=2/5.5/9
x-1/3=2/9
x=2/9+1/3
x=5/9
________________
FOREVER LOVE - TVXQ
DAY BY DAY - BIGBANG
IN TO THE NEW WORLD - SNSD
NO OTHER - SUPER JUNIOR
FIND - SS501

HeroJaejoong137.jpg
 
B

bim198

Thiếu bước quy đồng
(x-1/3).9/5=2/5
x-1/3=2/5:9/5
x-1/3=2/5.5/9
x-1/3=2/9
x=2/9+1/3
x=2/9+3/9
x=5/9
 
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