Question

можете помочь умоляю пожалуйста до завтра надо срочно!​

Answer 1

$(4 \frac{8}{21} + x) - 7 \frac{13}{21} = 2 \frac{12}{21} \\ 4 \frac{8}{21} + x = 2 \frac{12}{21} + 7 \frac{13}{21} \\ 4 \frac{8}{21} + x = 9 \frac{25}{21} \\ x = 9 \frac{25}{21} - 4 \frac{8}{21} \\ x = 5 \frac{17}{21}$

$(12 \frac{5}{13} + y) - 9 \frac{9}{13} = 7 \frac{7}{13 } \\ 12 \frac{5}{13} + y = 7 \frac{7}{13} + 9 \frac{9}{13} \\ 12 \frac{5}{13} + y = 16 \frac{16}{13} \\ y = 16 \frac{16}{13} - 12 \frac{5}{13} \\ y = 4 \frac{11}{13}$

$(x + 2 \frac{9}{11} ) - 4 \frac{10}{11} = 1 \frac{4}{11} \\ x + 2 \frac{9}{11} = 1 \frac{4}{11} + 4 \frac{10}{11} \\ x + 2 \frac{9}{11} = 5 \frac{14}{11} \\ x = 5 \frac{14}{11} - 2 \frac{9}{11} \\ x = 3 \frac{5}{11}$

$(x + 3 \frac{12}{17} ) - 8 \frac{9}{17} = 4 \frac{10}{17} \\ x + 3 \frac{12}{17} = 4 \frac{10}{17} + 8 \frac{9}{17} \\ x + 3 \frac{12}{17} = 12 \frac{19}{17 } \\ x = 12 \frac{19}{17} - 3 \frac{12}{17} \\ x = 9 \frac{7}{17}$

$(12 \frac{5}{13} + y) - 9 \frac{9}{13} = 7 \frac{7}{13} \\ 12 \frac{5}{13} + y = 7 \frac{7}{17} + 9 \frac{9}{13} \\ 12 \frac{5}{13} + y = 16 \frac{16}{13} \\ y = 16 \frac{16}{13} - 12 \frac{5}{13} \\ y = 4 \frac{11}{13}$

$(x - 3 \frac{13}{21} ) + 2 \frac{10}{21} = 7 \frac{12}{21} \\ x - 3 \frac{13}{21} = 7 \frac{12}{21} - 2 \frac{10}{21} \\ x - 3 \frac{13}{21} = 5 \frac{2}{21} \\ x = 5 \frac{2}{21} + 3 \frac{13}{21} \\ x = 8 \frac{15}{21 } \\ x = 8 \frac{5}{7}$