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26 September, 12:05

Becky and tommy are asked to solve - 4x-25=8x+15 identity where one of them made an error

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  1. 26 September, 15:52
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    I feel sorry for Becky and Tommy. The one who didn't come up with x=-10/3 made an error.

    first bring 8x to the left and - 25 to the right and simplify:

    -4x-8x = 25+15 = > - 12x = 40

    x = - 40/12 = - 10/3
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