1. Simplify 3x - 2y + 9 + 9y - x
A. 2x + 7y + 9
B. - 7y + 2x
C. 9 - 7y + 2x
2.) 15y - 3 - 9y + 8 - 2
A. 6y - 3
B. - 4y + 9
C. 6y + 3
3.) 2a - 5b + 10 - 6a + 9b
A. 4a + 4b + 10
B. - 4a + 4b - 10
C. - 4a + 4b + 10
4.) 11a + 12b - 3a - 8b + 7
A.8a + 4b + 7
B.14a + 20a + 7
C. 8a + 20a + 7
2007-04-14 19:16:31 · 7 answers · asked by meee! 1 in Science & Mathematics ➔ Mathematics
1.A; 2.C; 3.C; 4.A
2007-04-14 19:22:51 · answer #1 · answered by rupert g 2 · 1⤊ 0⤋
1. a 3x-x=2x -2y+9y=7y +9 2x+7y+9
2. c 15y-9y=6y -3+8=5-2=3 6y+3
3.c 2a-6a=-4a -5b+9b=4b +10 -4a+4b+10
4.a 11a-3a=8a 12b-8b=4b +7 8a+4b+7
2007-04-14 21:39:42 · answer #2 · answered by Dave aka Spider Monkey 7 · 1⤊ 0⤋
1. combine like terms.
3x - x + 9y - 2y + 9 = 2x + 7y +9
Answer: a
2. 15y - 9y + 8 - 2 - 3 = 6y + 3
Answer: c
3. 2a - 6a + 9b - 5b + 10 = -4a + 4b +10
Answer: c
4. 11a - 3a + 12b - 8b + 7 = 8a + 4b + 7
Answer: a
Hope this helps!
2007-04-14 19:25:33 · answer #3 · answered by Sakic fan 3 · 1⤊ 0⤋
Answer for the 1st one:
3x-2y+9+9y-x
= (3x-x) + (9y-2y) +9
=2x +7y +9
The rest you try to find the solution by yourself then.
2007-04-14 19:23:51 · answer #4 · answered by oo_clover_oo 2 · 1⤊ 0⤋
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2016-12-29 12:31:31 · answer #5 · answered by Anonymous · 0⤊ 0⤋
1
3x-2y+9+9y-x
2x+7y+9
The answer is a.
2
15y-3-9y+8-2
6y+3
The answer is c.
3
2a-5b+10-6a+9b
-4a+4b+10
The answer is c.
4
11a+12b-3a-8b+7
8a+4b+7
The answer is a.
2007-04-15 03:26:45 · answer #6 · answered by Anonymous · 0⤊ 0⤋
A,C,C,A
2007-04-14 19:59:47 · answer #7 · answered by Anonymous · 1⤊ 0⤋