a/7=(a-5)/2

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Solution for a/7=(a-5)/2 equation: 


a in (-oo:+oo)

a/7 = (a-5)/2 // - (a-5)/2

a/7-((a-5)/2) = 0

(-1*(a-5))/2+a/7 = 0

(-1*7*(a-5))/(2*7)+(2*a)/(2*7) = 0

2*a-1*7*(a-5) = 0

35-5*a = 0

(35-5*a)/(2*7) = 0

(35-5*a)/(2*7) = 0 // * 2*7

35-5*a = 0

35-5*a = 0 // - 35

-5*a = -35 // : -5

a = -35/(-5)

a = 7

a = 7

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