a/20+4/15=-9/15

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Solution for a/20+4/15=-9/15 equation: 


a in (-oo:+oo)

a/20+4/15 = -9/15 // + -9/15

a/20+4/15-(-9/15) = 0

a/20+4/15+3/5 = 0

1/20*a+13/15 = 0 // - 13/15

1/20*a = -13/15 // : 1/20

a = -13/15/1/20

a = -52/3

a = -52/3

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