Решите уравнения x/3+x/3=8 2x+4=9 5x-2(x-4)=9x+23 10x-3(4-2x)=16+20x 9x-2(2x-3)=3(x+1)

1) х/3 + х/3 =8
2х/3=8
2х=24
х=12
2) 2х+4=9
2х=9-4
2х=5
х=2¹/₂
3) 5х-2(х-4)=9х+23
5х-2х+8=9х+23
3х+8=9х+23
3х-9х=23-8
-6х=15
х=-2¹/₂
4) 10х - 3(4-2х)=16 + 20х
10х-12+6х=16+20х
-12-16=20х-10х-6х
-28=4х
х=-7
5) 9х - 2(2х-3)=3(х+1)
9х-4х+6=3х+3
9х-4х-3х=3-6
2х=-3
х=-3/2
х=-1¹/₂