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Mathematics

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If 3 times a certain number is increased by 4 the result is 28. What is the number?
If x is "the number," which of the following equations could be used to solve for the number?
3x + 4 = 28
3(x + 4) = 28
03x = 4 +28
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Answer :

Daeh15go Daeh15go

first one. if x is the mystery number, 3 times it would be 3(x), then plus four would be, 3(x)+4, if it equals 28 it’d be: 3x+4=28

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