Question

Помогите с решением,даю 25 баллов.

Answer 1

Пошаговое объяснение:

1.a)$x+\frac{4}{14}=\frac{9}{14}$

$x+\frac{2}{7}=\frac{9}{14} \\x=\frac{9}{14}-\frac{2}{7}\\x=\frac{5}{14}$

б)$\frac{17}{29}-t=\frac{15}{29} \\-t=\frac{15}{29} -\frac{17}{29}\\-t=-\frac{2}{29} \\t=\frac{2}{29}$

в)$\frac{26}{100}+y= \frac{93}{100}\\\frac{13}{50}+y= \frac{93}{100} \\y=\frac{93}{100} -\frac{13}{50} \\y=\frac{67}{100}=0,67$

г)$k-\frac{14}{35}=\frac{19}{35} \\k-\frac{2}{5} =\frac{19}{35} \\k=\frac{19}{35} +\frac{2}{5} \\k=\frac{33}{35}$

2.a)$\frac{18}{27} +\frac{7}{27}- \frac{8}{27}=\frac{18+7-8}{27}=\frac{17}{27}$

б)$\frac{17}{19}-( \frac{13}{19}- \frac{8}{19})=\frac{17}{19} -\frac{5}{19}=\frac{12}{19}$