2025beatrizmartins 2025beatrizmartins

28-05-2020
Mathematics

contestada

18 - 7x = -3
working out please

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lynnviss lynnviss

28-05-2020

X=3.

Add three to each side

21-7x=0
21-7(3)=0

Check it
18-7(3)=-3

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