What is the sum of 3a-b, 2a +c, 2b – 4d and 3b-a +2d-2c?
回答 (11)
2009-04-25 8:45 am
✔ 最佳答案
3a - b + 2a + c + 2b - 4d + 3b - a + 2d - 2c= 3a + 2a - a - b + 2b + 3b + c - 2c - 4d + 2d
= 4a + 4b - c - 2d
So the answer is 4a + 4b - c - 2d
2009-04-25 11:15 am
4a+4b-c-2d
2009-04-25 11:13 am
Q.3a-b + 2a +c + 2b – 4d + 3b-a +2d-2c
Ans. 3a - b
+ 2a + c
+ + 2b - 4d
+ -a+ 3b - 2c+ 2d
__________________
4a +4b - c - 2d(ans)
Ans. 3a - b
+ 2a + c
+ + 2b - 4d
+ -a+ 3b - 2c+ 2d
__________________
4a +4b - c - 2d(ans)
2009-04-25 9:43 am
3a_____ - b
2a_____________c
________2b_____________- 4d
- a______3b____- 2c______ 2d
4a + 4b - c - 2d
2a_____________c
________2b_____________- 4d
- a______3b____- 2c______ 2d
4a + 4b - c - 2d
2009-04-25 8:49 am
3a -b
2a +c
2b -4d
-a +3b -2c +2d
------------------------------
4a+4b-c-2d
good luck.
2a +c
2b -4d
-a +3b -2c +2d
------------------------------
4a+4b-c-2d
good luck.
2009-04-25 8:44 am
the answer will remain the same coz they are of different coefficients.. you should have the same in order for you to add or subtract it. For example.. 3a-a is equal to 2a.. as opposed to 3a-b is still equal to 3a-b. Hope this helps. :)
2009-04-25 11:36 am
(3a - b) + (2a + c) + (2b - 4d) + (3b - a) + (2d - 2c)
= 3a - b + 2a + c + 2b - 4d + 3b - a + 2d - 2c
= 3a + 2a - a - b + 2b + 3b + c - 2c - 4d + 2d
= 4a + 4b - c - 2d
= 3a - b + 2a + c + 2b - 4d + 3b - a + 2d - 2c
= 3a + 2a - a - b + 2b + 3b + c - 2c - 4d + 2d
= 4a + 4b - c - 2d
2009-04-25 8:45 am
5a plus 4b plus c minus 2d
2009-04-25 8:42 am
all as one sum or are thay all seperate?
2009-04-25 8:42 am
what is the value of A , B , C , and D?
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