3 years ago

| 3x | = 9 | -3r | = 9 b/5 = 1

1 answer:

8 0

|3x| = 9
|3x| = ±9
|3x| = 9 U |3x| = -9
3x = 9    U    3x = -9
   3    3     3     3
    x = 3    x = -3

|-3r| = 9
|-3r| = ±9
|-3r| = 9 U |-3r| = -9
   3r = 9 U    3r = -9
    3    3      3    3
    r = 3    r = -3

   ¹/₅b = 1
5(¹/₅b) = 5(1)
   b = 5

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