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31 July, 20:08

What is 7a+21=56 and what is the solution

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  1. 31 July, 22:11
    0
    7a+21=56

    Subtract 21 from 56

    7a=35

    Divide 35 by 7

    Answer a=5
  2. 31 July, 23:23
    0
    7a+21=56

    Begin by subtracting 21 on both sides:

    21-21=0 so the 21 in the left cancels, then 56-21=35

    Your new equation will be

    7a=35

    Finally, divide by 7 on both sides:

    7/7=1 and 35/7=5

    your answer will be

    a=5
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