2/5=2(3z-7)

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Solution for 2/5=2(3z-7) equation: 


z in (-oo:+oo)

2/5 = 2*(3*z-7) // - 2*(3*z-7)

2/5-(2*(3*z-7)) = 0

2/5-2*(3*z-7) = 0

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

2-2*5*(3*z-7) = 0

72-30*z = 0

(72-30*z)/5 = 0

(72-30*z)/5 = 0 // * 5

72-30*z = 0

72-30*z = 0 // - 72

-30*z = -72 // : -30

z = -72/(-30)

z = 12/5

z = 12/5

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