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Anni [7]
3 years ago
13

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

Mathematics
1 answer:
coldgirl [10]3 years ago
7 0

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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