`(z)/(z+15)=(4)/(9)`

Solve the following equations. frac(z) (z + 15) = frac(4)(9)

(2-9z)/(17-4z)=4/5

Find all positive real solutions to 4x+(18)/(y)=14,2y+(9)/(z)=15,9z+(16)/(x)=17 .

Find all positive real solutions to 4x+(18)/(y)=14,2y+(9)/(z)=15,9z+(16)/(x)=17 .

Find all positive real solutions to 4x+(18)/(y)=14,2y+(9)/(z)=15,9z+(16)/(x)=17 .

If (z +5)/(7) + (4(z -11))/(9) + 3 = 0 , then z = ______

Let |z_(1)|=i,i=1,2,3,4 and |16z_(1)z_(2)z_(3)+9z_(1)z_(2)z_(4)+4z_(1)z_(3)z_(4)+z_(2)z_(3)z_(4)|=48 then the value of |(1)/(bar(z)_(1))+(4)/(bar(z)_(2))+(9)/(vec z_(3))+(16)/(bar(z)_(4))|

x+y+z=15 if 9, x, y, z, a are in A.P. while (1)/(X)+(1)/(Y)+(1)/(Z)=(5)/(3)if9,X, Y, Z, a are in H.P., then the value of a will be -

If (4z_(1))/(9z_(2))+(4bar(z_(1)))/(9bar(z_(2)))=0, then the value of |(z_(1)-z_(2))/(z_(1)+z_(2))| is