z decreased by 9 is z-9
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6 + z/9 = 9 Therefore, z/9 = 3 3 x 9 = 27 Therefore, z = 27
It is the same as: 9*z*z*z*z
xy + z = 9Subtract 'z' from each side:xy = 9 - zDivide each side by 'x':y = (9 - z) / x
its either (z2+ 9)(z - 2) , (z2+ 2)(z - 9) , or (z2- 9)(z - 2)
If Z = 3, then (9 + 7Z) = [ 9 + 7(3) ] = 9 + 21 = 30