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Find the natural numbers of the set A if given 4x+1=2x+11?

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potziunea | Student, Grade 10 | (Level 2) Honors

Posted August 14, 2011 at 9:47 PM via web

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Find the natural numbers of the set A if given 4x+1=2x+11?

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giorgiana1976 | College Teacher | (Level 3) Valedictorian

Posted August 14, 2011 at 9:50 PM (Answer #1)

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In other words, we'll have to solve the equation and to verify if the value of x is a natural number. We notice that the set A will have only one element because the equation to be solved is a linear equation.

We'll move the terms in x to the left side:

4x - 2x = 11 - 1

2x = 10

x = 10/2

x = 5

Since the value of x is a natural number, therefore the set A contains the element x = 5, such as A = {5}.

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