1 5/7:(-6)+1( 16/21-3 4/9):(-1 11/42)=x y/z
X=
y=
z=
(-1 1/8 - 27/32) : (3,05-2,84)-0,3/1,4=x y/z
X=
y=
z=
[m](1 \frac{16}{21}–3 \frac{4}{9}):(–1 \frac{11}{42})=1 \frac{48}{63}–3 \frac{28}{63}:(– \frac{53}{42})= \frac{106}{63}\cdot \frac{42}{53}=\frac{4}{3}[/m]
[m]1\frac{ 5}{7}:(–6)-(1 \frac{16}{21}–3 \frac{4}{9}):(–1 \frac{11}{42})=\frac{2}{7}-\frac{4}{3}=\frac{6}{21}-\frac{28}{21}=-\frac{22}{21}=-1\frac{1}{21}[/m]
x=-1
y=1
z=21
2)
[m](–1 \frac{1}{8} –\frac{27}{32}) : (3,05–2,84)–\frac{0,3}{1,4}=(–1 \frac{4}{32} –\frac{27}{32}) : 0,21–\frac{3}{14}=(– \frac{36}{32} –\frac{27}{32}) : \frac{21}{100}–\frac{3}{14}=(– \frac{63}{32}) \cdot \frac{100}{21}–\frac{3}{14}=[/m]
[m]=-\frac{3\cdot 21\cdot 4\cdot 25}{4\cdot 8\cdot 21}-\frac{3}{14}=-\frac{75}{ 8}-\frac{3}{14}=\frac{525}{56}-\frac{12}{56}=-\frac{525+12}{56}=-9\frac{33}{56}[/m]
x=-9
y=33
z=56