Question

упростите выражение( 3x+z)/(5x-2z)-(2/3)

Answer 1

(3x+z)/(5x-2z) -2/3=(9x+3z-10x+4z)/3(5x-2z)=(7z-x)/3(5x-2z)

Answer 2

$frac{3x+z}{5x-2z} - frac{2}{3} = frac{3(3x+z)-2(5x-2z)}{3(5x-2z)} = frac{9x+3z-10x+4z}{15x-6z} = \ = frac{7z-x}{15x-6z}$