1/4(a+4)+1/5(8a)

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Solution for 1/4(a+4)+1/5(8a) equation: 


a in (-oo:+oo)

(1/4)*(a+4)+8*(1/5)*a = 0

1/4*(a+4)+(8*a)/5 = 0

(1/4*5*(a+4))/5+(8*a)/5 = 0

1/4*5*(a+4)+8*a = 0

37/4*a+5 = 0

(37/4*a+5)/5 = 0

(37/4*a+5)/5 = 0 // * 5

37/4*a+5 = 0

37/4*a+5 = 0 // - 5

37/4*a = -5 // : 37/4

a = -5/37/4

a = -20/37

a = -20/37

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