1/10+2/5a=9/10

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Solution for 1/10+2/5a=9/10 equation: 


a in (-oo:+oo)

(2/5)*a+1/10 = 9/10 // - 9/10

(2/5)*a+1/10-(9/10) = 0

(2/5)*a+1/10-9/10 = 0

2/5*a-4/5 = 0 // + 4/5

2/5*a = 4/5 // : 2/5

a = 4/5/2/5

a = 2

a = 2

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