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 Question from damien, a parent: solve: S x U - T = 44 T - U x S = 36 U + T - S = 7 U x U / S = 4

Hi Damien,

Are you sure that you have these equations correct? If you multiply the second equation by -1 it becomes

$-T + U \times S = -36$

which is

$U \times S - T = -36.$

This is inconsistent with the first equation and hence there are no numbers $S, T$ and $U$ that satisfy these equations.

Penny

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