7a=8x/7a

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Solution for 7a=8x/7a equation: 


x in (-oo:+oo)

7*a = a*((8*x)/7) // - a*((8*x)/7)

7*a-(a*((8*x)/7)) = 0

7*a+(-8/7)*a*x = 0

7*a-8/7*a*x = 0 // - 7*a

-8/7*a*x = -(7*a) // : -8/7*a

x = (-(7*a))/(-8/7*a)

x = 49/8

x = 49/8

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