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14-10-2020
Mathematics

contestada

When
When 7 is subtract from three times a certain number the result is 28 what is the number

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PoeticSushi PoeticSushi

14-10-2020

Answer:

x=49

Step-by-step explanation:

you replace the unknown with a variable (x)

you subtract 7 three times, so it x-7-7-7=28 or x-21=28

you add 21 to both sides, then you get x=49

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