Question

помогите пожалуйста ​

Answer 1

ответ:

а) $\frac{7}{12}$ - $\frac{4}{12}$ + $\frac{9}{12}$ = $\frac{7-4+9}{12}$ = $\frac{12}{12}$ = 1

б) $\frac{5}{29}$ + $\frac{12}{29}$ - $\frac{14}{29}$ + $\frac{7}{29}$ = $\frac{5+12-14+7}{29}$ = $\frac{10}{29}$

в) ( $\frac{17}{47}$ + $\frac{12}{47}$ ) - ( $\frac{41}{47}$ -$\frac{37}{47}$ ) = ( $\frac{17+12}{47}$ ) - ( $\frac{41-37}{47}$ ) = $\frac{29}{47}$ - $\frac{4}{47}$ = $\frac{25}{47}$

а) $\frac{5}{14}$ - $\frac{3}{14}$ + $\frac{12}{14}$ = $\frac{5-3+12}{14}$ = $\frac{14}{14}$ = 1

б) $\frac{29}{37}$ - $\frac{15}{37}$ - $\frac{7}{37}$ + $\frac{9}{37}$ = $\frac{29-15-7+9}{37}$ = $\frac{16}{37}$

в) ( $\frac{29}{43}$ - $\frac{13}{43}$ ) + ( $\frac{35}{43}$ - $\frac{28}{43}$ ) = ( $\frac{29-13}{43}$ ) + ( $\frac{35-28}{43}$ ) = $\frac{16}{43}$ + $\frac{7}{43}$ = $\frac{23}{43}$