-1/2z+2/5=7/5

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Solution for -1/2z+2/5=7/5 equation: 


z in (-oo:+oo)

(-1/2)*z+2/5 = 7/5 // - 7/5

(-1/2)*z+2/5-(7/5) = 0

(-1/2)*z+2/5-7/5 = 0

-1/2*z-1 = 0 // + 1

-1/2*z = 1 // : -1/2

z = 1/(-1/2)

z = -2

z = -2

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