Question

-9/14z+2=4 4/7 плиз не могу решить

Answer 1

$frac{-9}{14z} +2=4 frac{4}{7} \ \ frac{-9}{14z} + frac{2*14z}{14z} = frac{32}{7} \ \ 32*14z=7(28z-9) \ 448z=196z-63 \ 252z=-63 \ z=-0.25$