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

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Solution for 1/10(a-1)=2/5(a+2)-1/5a equation: 


a in (-oo:+oo)

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

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

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

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

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

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

a-3/2*a-9/2 = 0

-1/2*a-9/2 = 0

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

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

-1/2*a-9/2 = 0

-1/2*a-9/2 = 0 // + 9/2

-1/2*a = 9/2 // : -1/2

a = 9/2/(-1/2)

a = -9

a = -9

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