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Brendan
Mathematics
31 January, 02:30
Homework & practice 3-4 mental math
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Cameron Ortiz
31 January, 02:59
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3-4=-1. To use mental math, imagine that there is a number line in your head. Start at three, and since we're subtracting, move to the left 4 units. This will land you at - 1. I hope this gets easier for you in the future!
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