1) x=2/3*x+1 2)x-1/2=3/4*x 3)x-2/3=5/6*x 4)1 4/5*y=y+4 - вопрос №3702479123121234323564145452313596 от alexei2016111 21.11.2020 19:31

Question

Математика: 1) x=2/3*x+1 2)x-1/2=3/4*x 3)x-2/3=5/6*x 4)1 4/5*y=y+4 5)2/3y-1/3=5/9y 6) 3/4y-2/3=7/12y уравнение подробнее можно

alexei2016111 · Answer

1) х = 2/3х + 1
    х - 2/3х = 1
   1/3 х = 1
   х = 1 : 1/3
   х = 3
2) х - 1/2 = 3/4х
   х - 3/4х = 1/2
   1/4х = 1/2
   х = 1/2 : 1/4
   х = 2
3) х - 2/3 = 5/6х
   х - 5/6х = 2/3
   1/6х = 2/3
   х = 2/3 : 1/6
   х = 4
4) 1 4/5у = у + 4
   1 4/5у - у = 4
   4/5у = 4
   у = 4 : 4/5
   у = 5
5) 2/3у - 1/3 = 5/9у
   2/3у - 5/9у = 1/3
   6/9у - 5/9у = 1/3
   1/9у = 1/3
   у = 1/3 : 1/9
   у = 3
6) 3/4у - 2/3 = 7/12у
   3/4у - 7/12у = 2/3
   9/12у - 7/12у = 2/3
   2/12у = 2/3
   у = 2/3 : 2/12
   у = 4