Question

решите уравнение
(2x-4):(-1/3)=-7

Answer 1

$(2x-4):(- \frac{1}{3} )=-7 \\ 2x-4=-7*(- \frac{1}{3} ) \\ 2x-4= \frac{7}{3} \\ 2x-4=2 \frac{1}{3} \\ 2x=2 \frac{1}{3} +4 \\ 2x=6 \frac{1}{3} \\ x=6 \frac{1}{3} :2 \\ x= \frac{19}{3} * \frac{1}{2} \\ x= \frac{19}{6} \\ x=3 \frac{1}{6}$