SOLUTION: I need help with this problem: IF a = -1 and b = 2 - | - a - b | What I have so far is the following: - | - |(- 1)- 2 |

Algebra ->  Absolute-value -> SOLUTION: I need help with this problem: IF a = -1 and b = 2 - | - a - b | What I have so far is the following: - | - |(- 1)- 2 |      Log On


   

Question 44786: I need help with this problem:
IF a = -1 and b = 2

- | - a - b |
What I have so far is the following:
- | - |(- 1)- 2 |
Answer by AnlytcPhil(1806) About Me  (Show Source):
You can put this solution on YOUR website!
I need help with this problem: 
IF a = -1 and b = 2

- | - a - b | 
What I have so far is the following: 
- | - |(- 1)- 2 |

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No that's not quite right.

                      - | - a   - b |

Replace a by (-1) and b by 2:

                      - | -(-1) - 2 |

Replace -(-1) by 1: 

                      - |   1   - 2 |

Replace 1 - 2 by -1:

                      - |     -1    |

Replace |     -1     | by 1:

                      -      1

 
That's it. -1.

Edwin