15/28=6/7z

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Solution for 15/28=6/7z equation: 


z in (-oo:+oo)

15/28 = (6/7)*z // - (6/7)*z

15/28-((6/7)*z) = 0

(-6/7)*z+15/28 = 0

15/28-6/7*z = 0 // - 15/28

-6/7*z = -15/28 // : -6/7

z = -15/28/(-6/7)

z = 5/8

z = 5/8

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