( $\genfrac{}{}{0ex}{}{2}{15}$ + $\genfrac{}{}{0ex}{}{2}{35}$ + $\genfrac{}{}{0ex}{}{2}{63}$) : $x$ = $\genfrac{}{}{0ex}{}{1}{18}$

  ( $\genfrac{}{}{0ex}{}{2\times 7}{15\times 7}$ + $\genfrac{}{}{0ex}{}{2\times 3}{35\times 3}$ + $\genfrac{}{}{0ex}{}{2}{63}$) : $x$ = $\genfrac{}{}{0ex}{}{1}{18}$

   ($\genfrac{}{}{0ex}{}{14}{105}$ + $\genfrac{}{}{0ex}{}{6}{105}$ + $\genfrac{}{}{0ex}{}{2}{63}$) : $x$ = $\genfrac{}{}{0ex}{}{1}{18}$

    ($\genfrac{}{}{0ex}{}{20}{105}$ + $\genfrac{}{}{0ex}{}{2}{63}$) : $x$  = $\genfrac{}{}{0ex}{}{1}{18}$

     ( $\genfrac{}{}{0ex}{}{4}{21}$ + $\genfrac{}{}{0ex}{}{2}{63}$) : $x$ = $\genfrac{}{}{0ex}{}{1}{18}$

       ($\genfrac{}{}{0ex}{}{12}{63}$ + $\genfrac{}{}{0ex}{}{2}{63}$) : $x$ = $\genfrac{}{}{0ex}{}{1}{18}$

         $\genfrac{}{}{0ex}{}{2}{9}$ : $x$ = $\genfrac{}{}{0ex}{}{1}{18}$

               $x$ = $\genfrac{}{}{0ex}{}{2}{9}$ : $\genfrac{}{}{0ex}{}{1}{18}$

               $x$ = 4

0.45

a

1+9= 1332589665865996 ;000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

1+1=2

$xxx5+x=120$

$=>xxx(5+1)=120$

$=>xxx6=120$

$=>x=120:6$

$=>x=20$

Tổng số phần bằng nhau là

3+5=8 ( phần)

Số thứ nhất là

96 : 8 x 3=36

Số thứ 2 là:

96:8x5=60