Algebra (Page 29)

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11. 5b + 3a – 2c + 6x.

12. 6bc – 3ax + 2xb – 5ac + 2cx.

13. 3bcd + 5cxa – 7xab + abc.

14. 2c2 + 3b3 + 4a4.

15. 1/2a3c – b3 – c3 – 3/4 abc3.

16. 2a – b – 2ab/a+b .

17. 2bc – 3/4 c3 + 3ab – 2a – x + 4/15bx.

18. a2bx+ab2c+abc2+xac2 / abc .

19. Henry bought some apples at 3 cents apiece, and twice as many pears at
4 cents apiece, paying for the whole 66 cents. How many of each did he
buy?

20. Sarah’s father told her that the difference between two-thirds and five-
sixths of his age was 6 years. How old was he?

29

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