y=2/5*4-30

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Solution for y=2/5*4-30 equation: 


y in (-oo:+oo)

y = 4*(2/5)-30 // - 4*(2/5)-30

y-(4*(2/5))+30 = 0

y-8/5+30 = 0

y+142/5 = 0 // - 142/5

y = -142/5

y = -142/5

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