8x - 4y - 3x - 7y Help me please !
2 answers:
<u><em>5x-11y is the right answer.</em></u> First you had to used their group like terms, and it gave us, . Then you add similar elements, and it gave us,
, or
. Finally you had to add similar elements again, and it gave us the answer,
, or<u><em> </em></u><u><em>=5x-11y is the right answer.</em></u> Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie
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Answer: Eli read 3 historical fiction books , 7 biographies and 1 mystery book.
Step-by-step explanation:
Let x be the number of historical fiction books Eli read.
Then, Number of biographies he read = x+4
Number of mysteries he read = x-2
If he read a total of eleven books during the semester , then we have the following equation :
(Subtract 2 from both sides )
(Divide both sides by 3)
Therefore , Number of historical fiction books Eli read = 3
Number of biographies he read = 3+4=7
Number of mysteries he read =3-2=1
Hence, Eli read 3 historical fiction books , 7 biographies and 1 mystery book.