Question

When 27 times x^2 times z all over negative 3 times x^2 z to the fourth power is completely simplified, the exponent on the variable z is _____

Answer 1

let A =27x²z/-3x²z^4= -9z^-3, the exponent on the variable z is -3
proof
27x²/-3x²= -9, z/z^4= z^(1-4)=z^-3