9a/20-5a/4=7/10

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Solution for 9a/20-5a/4=7/10 equation: 


a in (-oo:+oo)

(9*a)/20-((5*a)/4) = 7/10 // - 7/10

(9*a)/20-((5*a)/4)-(7/10) = 0

(9*a)/20+(-5/4)*a-7/10 = 0

-4/5*a-7/10 = 0 // + 7/10

-4/5*a = 7/10 // : -4/5

a = 7/10/(-4/5)

a = -7/8

a = -7/8

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