(2x+2/5)(4x-8/7)=0

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Solution for (2x+2/5)(4x-8/7)=0 equation:


x in (-oo:+oo)

(2*x+2/5)*(4*x-(8/7)) = 0

(2*x+2/5)*(4*x-8/7) = 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-8/7 )

4*x-8/7 = 0 // + 8/7

4*x = 8/7 // : 4

x = 8/7/4

x = 2/7

x in { -1/5, 2/7 }

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