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

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


x in (-oo:+oo)

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

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

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

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

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

7/2*x-21+21/2 = 0

7/2*x-21/2 = 0

7/2*x-21/2 = 0

7/2*x-21/2 = 0 // + 21/2

7/2*x = 21/2 // : 7/2

x = 21/2/7/2

x = 3

x = 3

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