Question

Срочно помогите номер 4

Answer 1

( X + 3 ) / 7 = ( 2X - 1) / 5 
5 * ( X + 3 ) = 7 * ( 2X - 1 ) 
5X + 15 = 14X - 7 
14X - 5X = 15 + 7 
9X = 22 
X = 22/9 
X = 2 4/9 

Answer 2

5(x+3)=7(2x-1)
5x+15=14x-7
5x-14x=-7-15
-9x=-22
X=22/9
X=2 4/9

Answer 3

да