Question

помогите дам 100б пжпж​

Answer 1

Ответ:

1)

$1\frac{3}{7} - x = 3\frac{1}{3}\\ \\\frac{10}{7} - x = \frac{10}{3}\\ \\\frac{30}{21} - x = \frac{70}{21}\\ \\x = \frac{30 - 70}{21} = -\frac{40}{21} = -1\frac{19 }{21}$

2)

$7\frac{5}{12} + x = 2\frac{7}{8} \\\\\frac{89}{12} + x = \frac{23}{8}\\ \\\frac{178}{24} + x = \frac{69}{24}\\ \\x = \frac{69 - 178}{24} = -\frac{109}{24} = -4\frac{13}{24}$

3)

$x + 7\frac{3}{8} = -1\frac{5}{6} \\\\x + \frac{59}{8} = -\frac{11}{6}\\ \\x + \frac{177}{24} = -\frac{44}{24}\\ \\ x = \frac{-44-177}{24} = -\frac{221}{24} = -9\frac{5}{24}$