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I am thinking of a number. when it is increasd by 7, it equals 21. what is my number a. n=28 b. n=14 c. n=7 d. n=147
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I am thinking of a number. when it is increasd by 7, it equals 21. what is my number a. n=28 b. n=14 c. n=7 d. n=147
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Oct 1, 2017
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I am thinking of a number. when it is increasd by 7, it equals 21. what is my number
a. n=28
b. n=14
c. n=7
d. n=147
Mathematics
high-school
Eric Martinez
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if X is increased by 7 to make 21
X + 7 = 21
then rearrange the equation to get X
X = 21-7
X = 14(b)
Louis Go
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Oct 2, 2017
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Louis Go
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Let the number be x;
x+7=21
Subtracting 7 from each side,
x+7-7=21-7
x=14
Dylan Meeus
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Oct 7, 2017
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Dylan Meeus
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