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26-05-2019
Mathematics

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pls help

90−x·30=80
what is x

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Аноним Аноним

26-05-2019

90-x*30=80

90-30x=80

90-90-30x=80-90

-30x=-10

Divide by -30 for -30x and -10

-30/-30x=-10/-30

x=1/3

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