(2x+2/5)(4x-3/7)=0

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Solution for (2x+2/5)(4x-3/7)=0 equation: 


x in (-oo:+oo)

(2*x+2/5)*(4*x-(3/7)) = 0

(2*x+2/5)*(4*x-3/7) = 0

( 2*x+2/5 )

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

2*x = -2/5 // : 2

x = -2/5/2

x = -1/5

( 4*x-3/7 )

4*x-3/7 = 0 // + 3/7

4*x = 3/7 // : 4

x = 3/7/4

x = 3/28

x in { -1/5, 3/28 }

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