3x+2+3x+3=23
3х+3х=23-3-2
6х=18
Х=18:6
Х=3
3×x+1+3x+1=30
3х+3х=30-1-1
6х=28
Х=28:6
Х=4 2/3
4x+6+12+2×(x+1)=98
4х+6+12+2х+2=98
4х+2х=98-6-2-12
6х=78
Х=78:6
Х=13
3x+2+3x+3=23
3х+3х=23-3-2
6х=18
Х=18:6
Х=3
3×x+1+3x+1=30
3х+3х=30-1-1
6х=28
Х=28:6
Х=4 2/3
4x+6+12+2×(x+1)=98
4х+6+12+2х+2=98
4х+2х=98-6-2-12
6х=78
Х=78:6
Х=13