我有一題數學唔識,
唔該你地教教我,
係轉主項,寫埋步驟,
a(x+b)=b(x-a),則x=
千萬個唔該......
教下我等住救命
2008-10-26 7:23 am
回答 (4)
2008-10-26 7:33 am
✔ 最佳答案
a(x + b) = b(x - a)
ax + ab = bx - ab
ax - bx = -2ab
bx - ax = 2ab
(b - a)x = 2ab
x =2ab/(b - a)
=
2008-10-26 11:12 pm
a(x+b)=b(x-a)
ax+ab=-bx-ab
ab+ab=ax+bx
2ab=ab2x
2ab-ab=2x
ab =2x
ab/2=x
x=ab/2
ax+ab=-bx-ab
ab+ab=ax+bx
2ab=ab2x
2ab-ab=2x
ab =2x
ab/2=x
x=ab/2
參考: me
2008-10-26 5:53 pm
a(x + b) = b(x - a)
ax + ab = bx - ab
ax - bx = -2ab
bx - ax = 2ab
(b - a)x = 2ab
x =2ab/(b - a)
ax + ab = bx - ab
ax - bx = -2ab
bx - ax = 2ab
(b - a)x = 2ab
x =2ab/(b - a)
2008-10-26 7:37 am
a(x b) = b(x-a)
ax ab = bx-ab
ax-bx = -ab-ab
x(a-b) = -2ab
x = -2ab/(a-b)
ax ab = bx-ab
ax-bx = -ab-ab
x(a-b) = -2ab
x = -2ab/(a-b)
參考: 自己
收錄日期: 2021-04-23 23:06:03
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