✔ 最佳答案
(r+6)/3=r/2 7/6
Mutiply the both side of the equation by 6 (the L.C.M. of the denominators) gives:
2(r+6)=3r+7
2r+12=3r+7
有r左邊,冇r右邊
2r-3r=7-12
-r=-5
r=5
Steps:
(1) 有份數ge數就兩邊乘分母ge L.C.M.
(2) 乘開晒d括號,將成條式變晒得加減數
(3) 要ge野放左面,冇ge放右面(有r左邊,冇r右邊)
(4) 抽要ge野出黎(r)
(5) 除左面r以外ge野去右面(-1)