Răspuns:
Explicație pas cu pas:
[tex]\displaystyle \frac{7}{10} -a=\frac{5}{10} \\ \\ a=\frac{7}{10} -\frac{5}{10} \\ \\ a=\frac{2}{10} \\ \\ a=\frac{1}{5} \\\\\\\frac{2}{4} +c=\frac{4}{4} \\ \\ c=\frac{4}{4} -\frac{2}{4} \\ \\ c=\frac{2}{4} \\ \\ c=\frac{1}{4}[/tex]
[tex]\\ \displaystyle \frac{3}{10} +\frac{6}{10} -e=\frac{2}{10} \\ \\ \frac{9}{10} -e=\frac{2}{10} \\ \\ e=\frac{9}{10} -\frac{2}{10} \\ \\ e=\frac{7}{10}[/tex]
[tex]\displaystyle \frac{9}{10} -g=\frac{7}{10} -\frac{3}{10} \\\\\frac{9}{10} -g=\frac{4}{10}\\\\g=\frac{9}{10} -\frac{4}{10} \\\\g=\frac{6}{10} \\\\g=\frac{3}{5}[/tex]
[tex]\displaystyle b+\frac{3}{9} =\frac{7}{9} \\\\ b=\frac{7}{9} -\frac{3}{9} \\\\b=\frac{4}{9}[/tex]
[tex]\displaystyle d-\frac{1}{3} =\frac{4}{3} \\\\d=\frac{4}{3} +\frac{1}{3} \\ \\ d=\frac{5}{3}[/tex]
[tex]\displaystyle f-(\frac{56}{100} +\frac{31}{100} )=\frac{61}{100} \\ \\ f-\frac{87}{100} =\frac{61}{100} \\\\ f= \frac{61}{100} +\frac{87}{100} \\\\ f=\frac{148}{100}[/tex]
[tex]\displaystyle h+\frac{3}{4} +\frac{2}{4} =\frac{10}{4} -\frac{1}{4} \\\\h+\frac{5}{4} =\frac{9}{4} \\\\h=\frac{9}{4} -\frac{5}{4} \\\\h=\frac{4}{4} \\\\h=1[/tex]
[tex]\displaystyle\frac{x}{y} +\frac{z}{y} =\frac{x+z}{y}[/tex]
[tex]\displaystyle\frac{x}{y} -\frac{z}{y} =\frac{x-z}{y}[/tex] formulele de calcul
