7/10=8/a

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Solution for 7/10=8/a equation: 


D( a )

a = 0

a = 0

a = 0

a in (-oo:0) U (0:+oo)

7/10 = 8/a // - 8/a

7/10-(8/a) = 0

7/10-8*a^-1 = 0

-8*a^-1 = -7/10 // : -8

a^-1 = 7/80

-1 < 0

1/(a^1) = 7/80 // * a^1

1 = 7/80*a^1 // : 7/80

80/7 = a^1

a = 80/7

a = 80/7

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