Question

Z by Z + 15 is equal to 4 + 4by 9 ​

Answer 1

Answer:

Hey Mate!!

$\frac{z}{z+15} = 4+ \frac{4}{9}\\\\\implies \frac{z}{z+15} =\frac{36+4}{9}\\\\\implies \frac{z}{z+15} = \frac{40}{9}\\\\\implies 9z = 40(z + 15)\\\\\implies 9z = 40z +600\\\\\implies 9z - 40z = 600\\\\\implies -31z = 600\\\\\implies \boxed{\bold{z=\frac{-600}{31} }}$