A few days ago
Algebra Help!!!!! ASAP!?
ok, please help me. I’ve got an assignment due monday and my teacher sucked at explaining it. it is about adding and subtracting expressions. for ex.
(2a-1) – (-5a-5)
are you supposed to turn the minus sign in the middle to a plus sign and then change all the sign of each term in (-5a-5)? then do you write it out like this?
(2a +5a) + (1+5)
and would the answer be 7a + 6 ???
if i’m wrong please tell me how and be clear on the directions. i’m only in 7th grade.
Top 6 Answers
A few days ago
Favorite Answer
You’re almost right. A negative in front of () changes all the signs within the (). Therefore, you’ve got:
2a – 1 + 5a + 5 now gather like terms
2a + 5a – 1 + 5 and combine them
7a + 4
not so bad, is it?
1
A few days ago
(2a-1)-(-5a-5) = add the numbers with the same letter, because they could combine. so if u change the signs it would be like this now (2a-1)+(5a+5) = 2a+5a=7a and -1+5=4
the answer would be 7a+4
0
A few days ago
no its like this 2a-1+5a-5=
think of it like this to seperate the numbers out
2a)-1)+5a)-5)=
add the a’s
7a
add the negative numbers
-6
so its 7a-6
hope i helped!!!
and im younger than u 🙂
0
A few days ago
(2a-1) – (-5a-5)
(2a-1) + (5a+5)
2a -1 +5a + 5
7a +4
i think
0
A few days ago
I thought it was
7a+4
Because with the whole minus thing, don’t you change it to positive?
0
A few days ago
i hate algebra dont you?
0
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