(p+2)/4=(p-4)/7

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Solution for (p+2)/4=(p-4)/7 equation: 


p in (-oo:+oo)

(p+2)/4 = (p-4)/7 // - (p-4)/7

(p+2)/4-((p-4)/7) = 0

(p+2)/4+(-1*(p-4))/7 = 0

(7*(p+2))/(4*7)+(-1*4*(p-4))/(4*7) = 0

7*(p+2)-1*4*(p-4) = 0

3*p+30 = 0

(3*p+30)/(4*7) = 0

(3*p+30)/(4*7) = 0 // * 4*7

3*p+30 = 0

3*p+30 = 0 // - 30

3*p = -30 // : 3

p = -30/3

p = -10

p = -10

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