Is this Correct?
(-8ab+7a-5)-(-7ab+2) = -ab+7a+7

Question

Is this Correct?
(-8ab+7a-5)-(-7ab+2) = -ab+7a+7

rolldextro · Answer

-8ab+7a-5+7ab-2=-ab+7a-7

rolldextro · Answer

Yes you are correct.

mathstudent55 · Answer

No.

mariamikayla · Answer

(-8ab+7a-5)-(-7ab+2)=

= -8ab+7a-5+7ab-2=

= -ab+7a-2

mathstudent55 · Answer

Do it one step at a time.
Drop first set of parentheses.
Distribute negative 1 through second set of parentheses.
Collect like terms.

mathstudent55 · Answer

@Mariamikayla Sorry, also incorrect.

mathstudent55 · Answer

@rolldextro 
Your answer is different than the poster's, but you say she is correct. Do you mean your answer is incorrect?

mathstudent55 · Answer

$(-8ab+7a-5)-(-7ab+2) =$

$=-8ab+7a-5 +7ab-2 $

$=-ab+7a-7 $

mariamikayla · Answer

@mathstudent55 aah, yes, sorry... it was -ab+7a-7 ...i've forgot to add -5

mathstudent55 · Answer

@Haaileyyy 
Your only mistake was with the constant terms.
What is -5- 2?

haaileyyy · Answer

this is how i did it
$$(-8ab+7a-5)-(-7ab+2)$$
$$-8ab+7a-5+7ab-2$$
$$-ab+7a+7$$

haaileyyy · Answer

oohhh its supposed to be -7 and not positive

mathstudent55 · Answer

Your second line is correct.
-5 - 2 = -7

mathstudent55 · Answer

You got it now.

haaileyyy · Answer

Thank you so much

mathstudent55 · Answer

yw