The worksheet is combining like terms. The problem is.
-2(c-d)+(c-d)-6(c-d)
Thank you so much for your help. I am so confused!
2007-09-26 08:54:13 · 10 answers · asked by wwefan1324 5 in Science & Mathematics ➔ Mathematics
I'm in 7th grade taking an advance highschool credit algebra class and sometimes my teacher forgets were just 7th graders.
2007-09-26 08:59:32 · update #1
-2c+2d+c-d-6c+6d=-7c+7d
2007-09-26 08:58:06 · answer #1 · answered by Anonymous · 0⤊ 0⤋
combine like terms and always remember that a negative integer will affect the -or+ sign in the paratheses.
-2(c-d)+(c-d)-6(c-d)
-2c+2d+c-d-6c+6d
-8c+8d+c-d
-7c+7d
2007-09-26 16:05:59 · answer #2 · answered by justanothergirl 2 · 0⤊ 0⤋
-2(c-d)+(c-d)-6(c-d)
= -2c+2d+c-d-6c+6d
= -7c +7d
= -7(c-d)
2007-09-26 16:00:37 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋
-2(c-d) + (c-d) - 6(c-d)
= (-2)c - (-2)d + c - d - 6c - 6(-d)
= -2c + 2d + c - d - 6c + 6d
= (-2c + c - 6c) + (2d - d + 6d)
= (-7c) + (7d)
= -7c + 7d
2007-09-26 15:59:40 · answer #4 · answered by Mathematica 7 · 0⤊ 0⤋
-2(c-d)+(c-d)-6(c-d)
(distribute the numbers)
=-2c-(-2d)+c-d-6c-(-6d)
=-2c+2d+c-d-6c+6d
=-2c+c-6c+2d-d+6d
(then combine terms)
= -7c+7d
that should be right if you dont understand i am sorry but you should be ok
2007-09-26 16:01:14 · answer #5 · answered by Anonymous · 0⤊ 0⤋
-2(c-d)+(c-d)-6(c-d)
-2c+2d+c-d-6c+6d
arrange them for better view haha
-2c+c-6c+2d-d+6d
-7c+7d
2007-09-27 04:02:55 · answer #6 · answered by Jr Levesque 2 · 0⤊ 0⤋
-2(c-d)+(c-d)-6(c-d)
-2c + 2d + c - d - 6c + 6d
(-2c + c - 6c) + (2d - d + 6d)
(-7c) + (-7d)
-7*(c + d)
2007-09-26 15:59:26 · answer #7 · answered by PMP 5 · 0⤊ 1⤋
holy shiet im confused 2
2007-09-26 15:57:13 · answer #8 · answered by Anonymous · 0⤊ 2⤋
it will be -7c+7d
2007-09-26 16:00:40 · answer #9 · answered by ahmed a 1 · 0⤊ 0⤋
here's a hint: a(c-d) == ac-ad; -a(c-d) == -ac+ad
2007-09-26 15:58:08 · answer #10 · answered by (♥_♥) 6 · 0⤊ 0⤋