2x+3a+y-2-x-2a+2=
y-3y+2=
20a-y+a+y=
y-x+1-2y+x=
5a+15b+c-2a-b=
if you can help it would be much appreciated
更新1:
Thanks Guys! x
please help with my algebra?
2008-09-21 1:58 pm
can u answer please!
2x+3a+y-2-x-2a+2=
y-3y+2=
20a-y+a+y=
y-x+1-2y+x=
5a+15b+c-2a-b=
if you can help it would be much appreciated
2x+3a+y-2-x-2a+2=
y-3y+2=
20a-y+a+y=
y-x+1-2y+x=
5a+15b+c-2a-b=
if you can help it would be much appreciated
回答 (5)
2008-09-21 4:15 pm
✔ 最佳答案
1)2x + 3a + y - 2 - x - 2a + 2
= 3a - 2a + 2x - x + y - 2 + 2
= a + x + y
2)
y - 3y + 2
= -2y + 2
= -2(y - 2)
3)
20a - y + a + y
= 20a + a - y + y
= 21a
4)
y - x + 1 - 2y + x
= x - x + y - 2y + 1
= -y + 1
5)
5a + 15b + c - 2a - b
= 5a - 2a + 15b - b + c
= 3a + 14b + c
2008-09-21 9:13 pm
2x+3a+y-2-x-2a+2=2x+3a+y-x-2a
=2x+a+y-x
=x+a+y
y-3y+2= -2y+2
20a-y+a+y=20a+a
=21a
y-x+1-2y+x=y+1-2y
=1-y
5a+15b+c-2a-b=3a+15b+c-b
=3a+14b+c
=2x+a+y-x
=x+a+y
y-3y+2= -2y+2
20a-y+a+y=20a+a
=21a
y-x+1-2y+x=y+1-2y
=1-y
5a+15b+c-2a-b=3a+15b+c-b
=3a+14b+c
2008-09-21 9:08 pm
x+a+y
-2y+2
21a
-y+1
3a+14b+c
-2y+2
21a
-y+1
3a+14b+c
2008-09-21 9:06 pm
Just collect similar terms and do the arithmetic.............
2x+3a+y-2-x-2a+2 = x + a +y
y-3y+2 = 2 - 2y
20a-y+a+y = 21a
y-x+1-2y+x = 1 - y
5a+15b+c-2a-b = 3a + 14b + c
2x+3a+y-2-x-2a+2 = x + a +y
y-3y+2 = 2 - 2y
20a-y+a+y = 21a
y-x+1-2y+x = 1 - y
5a+15b+c-2a-b = 3a + 14b + c
2008-09-21 9:03 pm
x+a
-2y+2
21a
-y+1
3a+14b+c
-2y+2
21a
-y+1
3a+14b+c
收錄日期: 2021-05-01 11:13:15
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080921055825AAzVSMm