-3/5-3q/4=27(請列明中間部分)
2006-10-21 07:36:10 · 3 個解答 · 發問者 Anonymous in 教育與參考 ➔ 小學及中學教育
-3 / 5 - 3q / 4 = 27
去分母 (全式 x 20)
- 12 - 15q = 540
-15q = 552
q = - 36.8
2006-10-21 07:39:05 · answer #1 · answered by J 7 · 0⤊ 0⤋
-3/5-3q/4=27
the L.C.M .of 5and 4 is20
-(4)3/5 - (5)3q/4=27
-12-15q/20=27
-12-15q = 540
-15q=552
q=-36.8
2006-10-21 08:32:19 · answer #2 · answered by Anonymous · 0⤊ 0⤋
20(-3/5-3q/4)=27
-12-15q=540
-15q=552
q=-30 4/5
2006-10-21 07:41:21 · answer #3 · answered by ? 2 · 0⤊ 0⤋