Question

Розв'язати рівняння 4 2/9х + 3 5/14= 6 11/21 пж помогите ​

Answer 1

Ответ:

$4\frac{2}{9}x+3\frac{5}{14}=6\frac{11}{21}\\\frac{38}{9}x+\frac{47}{14}=\frac{137}{21}\\523x+423=822\\532x=822-423\\532x=399\\532x:532=399:532\\x=399:532\\x=\frac{399}{532}\\x=\frac{3}{4}$

Пошаговое объяснение:

Answer 2

Ответ:

4 2/9х + 3 5/14= 6 11/21

$4\frac{2}{9}x+3\frac{5}{14}=6\frac{11}{21};\\\\\frac{9*4+2}{9} x +\frac{14*3+5}{14} =\frac{21*6+11}{21} ;\\\\\frac{38}{9}x+\frac{47}{14}=\frac{137}{21}; | * 126\\\\126*\frac{38}{9}x+126*\frac{47}{14}=126*\frac{137}{21};\\\\14*38x+9*47=6*137;\\\\532x+423=822;\\\\532x=822-423;\\\\532x=399;\\\\x=\frac{399}{532};$

$\\x=\frac{3}{4}$    или   $x = 0,75$