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26 May, 13:12

Solve and check equation 20 = 2r - 3r + 10

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  1. 26 May, 16:00
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    2r-3r+10=20

    Move all terms to the left:

    2r-3r+10 - (20) = 0

    add all the numbers together, and all the variables

    -1r-10=0

    move all terms containing r to the left, all other terms to the right

    -r=10

    r=10/-1

    r=-10
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