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19 December, 12:41

What is 1 + 1 + 4 + 6 + 8 + 10 + 20 - - 30 + 40 - 45 - - 56 + 34=

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  1. 19 December, 12:46
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    Step-by-step explanation:

    (1+1+4+6+8+10+20) - (-30+40) - 45 - (-56+34) = solving bracket

    50 - (10) - 45 - (-22) =

    Open bracket

    50-10-45+22=

    50-10 - (45+22) = 40-67=-27
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