Question

Найти x из пропорции

Answer 1

Ответ: 3,6*(1,5+2 2/3+3,75)=х*(14-15 1/8:2,2)⇒3,6*(5 1/4+2 2/3)=х*(14-6,875)⇒3,6*(7+3/12+8/12)=х*7,125⇒3,6*7 11/12=х*7,125⇒х=28,5/7,125=4.

Объяснение:

Answer 2

Ответ:

$\dfrac{3,6}{14-15\frac{1}{8}:2,2}=\dfrac{x}{1,5+2\frac{2}{3}+3,75}\\\\\\\dfrac{3,6}{14-\frac{121}{8}:\frac{2,2}{10}}=\dfrac{x}{5,25+\frac{8}{3}}\\\\\\\dfrac{3,6}{14-\frac{121}{8}\cdot \frac{10}{22}}=\dfrac{x}{\frac{21}{4}+\frac{8}{3}}\\\\\\\dfrac{\frac{36}{10}}{14-\frac{11\cdot 5}{8}}=\dfrac{x}{\frac{95}{12}}\\\\\\\dfrac{18}{5\cdot \frac{57}{8}}=\dfrac{12\cdot x}{95}\\\\\\\dfrac{18\cdot 8}{5\cdot 57}=\dfrac{12\cdot x}{95}\\\\\\x=\dfrac{18\cdot 8\cdot 95}{5\cdot 57\cdot 12}$

$x=\dfrac{(2\cdot 9)\cdot 8\cdot (5\cdot 19)}{5\cdot (3\cdot 19)\cdot (2\cdot 6)}=\dfrac{9\cdot 8}{3\cdot 6}=\dfrac{3\cdot 8}{6}=4\\\\\\x=4$