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20 September, 11:24

Use properties of operations to determine whether the expressions are equivalent.

19) 7m + 10 + 9m and 16m + 10

20) 2b * 5 and 7b

21) 9 * (4r - 6) and 36r - 54

22) 12 + 5 (2 + y) and 5y + 22

23) 15j + 11 - 6j and 9j + 11

24) 8 (3x + 1) and 24x + 1

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  1. 20 September, 12:46
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    19. 7m + 10 + 9m = 16m + 10

    7m + 9m + 10 = 16m + 10

    16m + 10 = 16m + 10

    20. 2b * 5 = 7b

    10b ≠ 7b

    21. 9 (4r - 6) = 36r - 54

    9 (4r) - 9 (6) = 36r - 54

    36r - 54 = 36r = 54

    22. 12 + 5 (2 + y) = 5y + 22

    12 + 5 (2) + 5 (y) = 5y + 22

    12 + 10 + 5y = 5y + 22

    22 + 5y = 5y + 22

    23. 15j + 11 - 6j = 9j + 11

    15j - 6j + 11 = 9j + 11

    9j + 11 = 9j + 11

    24. 8 (3x + 1) = 24x + 1

    8 (3x) + 8 (1) = 24x + 1

    24x + 8 ≠ 24x + 1
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Home » Mathematics » Use properties of operations to determine whether the expressions are equivalent. 19) 7m + 10 + 9m and 16m + 10 20) 2b * 5 and 7b 21) 9 * (4r - 6) and 36r - 54 22) 12 + 5 (2 + y) and 5y + 22 23) 15j + 11 - 6j and 9j + 11 24) 8 (3x + 1) and 24x + 1
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