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Add a). 5+ (-9) +7 b). -3.5 + 7.2

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asked May 25, 2014 in ALGEBRA 1 by marleney Novice

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1 Answer

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a). 5+ (-9) +7

1. Draw a number line diagram

2. Start at zero, move 5 units positive side means towards right hand side.

3. Move 9 units negative side means towards left hand side.

4. Move 7 units positive side means towards right hand side.

5. Finally plot the point 3.

5+ (-9) +7 = 3

answered May 25, 2014 by anonymous

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