Question

Помогите решить уравнение (дробь1/4+1/5 )*x=1 4/5  (2 1/12 - 1 5/6)*x=3/4

Answer 1

Решение на первое равенство.

a1c64a9fe3ce6e1e3e2a263cb3614b49.docx

77d201995dcf7633d457c6d1a5283315.docx

Answer 2

(1/4+1/5 )*x=1 4/5 

 5+4                 9
---------  *  x = --------
  20                  5

9/20 * x = 9/5
x = 9/5 : 9/20
x = 9/5 * 20/9
x = 4
-------------------------
(1/4+1/5)*4=9/5 ili 1 4/5


(2 1/12 - 1 5/6)*x=3/4

25-22/12 * x = 3/4

3/12 * x = 3/4
x = 3/4 : 3/12
x  = 3/4 * 12/3
x = 3
----------------------------
(2 1/12 - 1 5/6)*3=3/4

a1c64a9fe3ce6e1e3e2a263cb3614b49.docx

77d201995dcf7633d457c6d1a5283315.docx