Question

Математика 6 класс хелп ми

Answer 1

Ответ:

$1)\ \ \dfrac{46+x+50}{3}=40\\\\\\46+x+50=120\ \ ,\ \ \ x+96=120\ \ ,\ \ x=24\\\\\\2)\ \ \Big(1\dfrac{2}{3}+\dfrac{1}{4}+\dfrac{7}{12}\Big):3=\Big(\dfrac{5}{3}+\dfrac{1}{4}+\dfrac{7}{12}\Big):3=\dfrac{20+3+7}{12}:3=\dfrac{30}{12\cdot 3}=\dfrac{10}{12}=\dfrac{5}{6}$