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3 years ago

Simplfy 6x + 7 – 2x + 2 +3x

Mathematics

1 answer:

masha68 [24]3 years ago

6 0

Answer:

6x + 7 - 2x + 2 + 3x 

 = 6x -2x + 3x +7 + 2

 9x - 2x + 9

 7x + 9 

 7x = -9

 x = -9/7 

hope it helps

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Answer:

Step-by-step explanation:

The ratio of the number of fiction books is 9:4

the difference between the number of fiction and nonfictionn is 245

so if the number of fiction books = 9x

then the number of nonfiction books = 4x

then difference = 9x-4x = 5x

the difference is given 245

then 5x= 245

x= $\frac{245}{5}$ =49

number of fiction books =49×9=441

number of nonfiction books =49×4=196

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