GARAL1222 GARAL1222

25-09-2014
Mathematics

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Seven decreased by three times a number is forty,please help

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BananaOnYourFace BananaOnYourFace

25-09-2014

7 - 3 = 4

4 x .... = 40

4 x 10 = 40

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Illuminati750 Illuminati750

25-09-2014

Hello,

x= the number
3x= three times the number

seven decreased by three times a number is forty, then:

7-3x=40
-3x=33
x=-11

Answer: the number is -11

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