Question

решите плиз, срочно​

Answer 1

$\displaystyle{7\frac{1}{2}:3\frac{9}{11} -(\frac{11}{49} \times\frac{21}{22} +3\frac{3}{4} )=}\\\\\displaystyle{=\frac{15}{2}\times\frac{11}{42} -(\frac{11}{49} \times\frac{21}{22} +\frac{15}{4} )$

Далее выполняем действия по порядку

$1) \dfrac{11}{49}\times\dfrac{21}{22} =\dfrac{1}{7} \times \dfrac{3}{2} =\dfrac{3}{14}$

$2) \displaystyle{\frac{3}{14} +\frac{15}{4} =\frac{6+105}{28} =\frac{111}{28}$

$3)\displaystyle{ \frac{15}{2}\times\frac{11}{42} =\frac{165}{84} =\frac{55}{28}$

$4) \displaystyle{\frac{55}{28} -\frac{111}{28} =-\frac{56}{28} =-2$

$\displaystyle{7\frac{1}{2}:3\frac{9}{11} -(\frac{11}{49} \times\frac{21}{22} +3\frac{3}{4} )=-2$

Answer 2

Ответ:

-41/22 решение на листике