flipster flipster

19-04-2016
Mathematics

contestada

REASONING - Without solving, how can you tell that x = 7 is not a solution of
3x + 10 = 20?

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itseileen itseileen

19-04-2016

Because anything that is multiplied by 3 and added to 10 will not equal 20

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swagboycool swagboycool

19-04-2016

Because 7 times 3 is 21 and without even having to add the ten you already know it does not equal 20.

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