Toán Lớp 5: a. 9.15 x X + 2.85 x X = 48 b 17/5 : X =34/5: 4/3

Question

Toán Lớp 5:  a. 9.15 x X + 2.85 x X = 48  b 17/5 : X =34/5: 4/3

huenthanh97 · Answer

a) 9,15 xx x + 2,85 xx x = 48   ( 9,15 + 2,85) xx x       = 48   12 xx x                         = 48           x                         = 48 : 12          x                          = 4   -----------------------------------------------------------   b) 17/5 : x = 34/5 : 4/3    17/5 : x   = 51/10               x   = 17/5 : 51/10             x      =2/3

dongoclandiem · Answer

$a)$   9.15 x X + 2.85 x X = 48          $(9.15+2.85) &times; X      = 48$          $12 &times; X                    = 48$          $X$             = $48:12$          $X$             = $4$     $b)$ $ frac{17}{5}$ : $X$ = $ frac{34}{5}$ : $ frac{4}{3}$              $ frac{17}{5}$ : $X$ = $ frac{51}{10}$              $X$ = $ frac{17}{5}$ : $ frac{51}{10}$               X = $ frac{2}{3}$