tiffany read x/3 books last month. Her brother read (4/9x-15) books and her sister read x/9 fewer books than tiffany. express th

Question

Sunny_sXe [5.5K]

3 years ago

11

tiffany read x/3 books last month. Her brother read (4/9x-15) books and her sister read x/9 fewer books than tiffany. express th

e total number of books read in terms of x. show your work.

Mathematics

1 answer:

Greeley [361] · Answer 1 · 2022-08-16T04:52:07+03:00

Tiffany: x/3 books

Brother: (4/9)x - 15 books

Sister: x/3 - x/9

Total: x/3 + (4/9)x - 15 + x/3 - x/9

The LCD here is 9. Mult. all terms by 9 and simplify the resulting expression:

3x + 4x - 135 + 3x - x = 7x + 3x - x - 135 = 9x - 135 books (answer)