Найти х : 1) х /5=3/8 2) 5/x = 3/b 3) 5x = 1/2 4) - вопрос №75318771538253351243112 от karina2013652 03.12.2020 00:37

Question

Математика: Найти х : 1) х /5=3/8 2) 5/x = 3/b 3) 5x = 1/2 4) 3/x = 1 : 1/2

karina2013652 · Answer

Х/5  = 3/88х = 5*38х = 15х = 15/8х = 1  7/8х=1,8751,875 /5  = 3/815/8  :  5  = 3/815/8  * 1/5 = 3/83/8  = 3/85/х=3/b3x = 5bx= 5b/3x = 1  2/3   * b5x =1/2x = 1/2  : 5  = 1/2  *  1/5  = 1/10х = 0,15 * 0,1  = 1/20,5 = 1/25/10 = 1/21/2  = 1/23/х = 1 : 1/23/х = 1  *  (2/1)3/х = 2/12х = 3*1х = 3/2х = 1,53/1,5  = 1 : 1/22 = 2...