1/5+1/2(3x-1)=21/5

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Solution for 1/5+1/2(3x-1)=21/5 equation: 


x in (-oo:+oo)

(1/2)*(3*x-1)+1/5 = 21/5 // - 21/5

(1/2)*(3*x-1)+1/5-(21/5) = 0

(1/2)*(3*x-1)+1/5-21/5 = 0

1/2*(3*x-1)+1/5-21/5 = 0

(1/2*5*(3*x-1))/5+1/5-21/5 = 0

1/2*5*(3*x-1)-21+1 = 0

15/2*x-21-3/2 = 0

15/2*x-45/2 = 0

(15/2*x-45/2)/5 = 0

(15/2*x-45/2)/5 = 0 // * 5

15/2*x-45/2 = 0

15/2*x-45/2 = 0 // + 45/2

15/2*x = 45/2 // : 15/2

x = 45/2/15/2

x = 3

x = 3

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