2/5x=21/10

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Solution for 2/5x=21/10 equation: 


x in (-oo:+oo)

(2/5)*x = 21/10 // - 21/10

(2/5)*x-(21/10) = 0

(2/5)*x-21/10 = 0

2/5*x-21/10 = 0 // + 21/10

2/5*x = 21/10 // : 2/5

x = 21/10/2/5

x = 21/4

x = 21/4

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