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OpenStudy (andrewthecookie):
this one's hard i dont know it srry :(
OpenStudy (anonymous):
A.
OpenStudy (anonymous):
ok one sec
OpenStudy (anonymous):
Frank had 7b baseball cards and his brother had b baseball cards. They combined their cards, and then gave away 2b cards. The expression below shows how many they have left.
7b + b - 2b
Which of the following expressions could be used to get the same results?
8b - 3b
8b - 2
6b
6 - b
OpenStudy (anonymous):
@KamiBug
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OpenStudy (anonymous):
@blurbendy
OpenStudy (anonymous):
C.
OpenStudy (kamibug):
The answer is C.
The three terms in the expression are like terms because they have the same variable. So all you gotta do is add or subtract the coefficients. :) Remember when a variable doesnt have a number next to it it's as if there was an invisible 1 there. 7+1-2=6 and just keep the "b." 6b.