6-(3-x)=21-(7/2)x - solution

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Solution for 6-(3-x)=21-(7/2)x equation:

x in (-oo:+oo)

x-3+6 = 21-((7/2)*x) // - 21-((7/2)*x)

x+(7/2)*x-21-3+6 = 0

9/2*x-18 = 0 // + 18

9/2*x = 18 // : 9/2

x = 18/9/2

x = 4

x = 4

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