2x - 5 = x+1
2x-x= - 5+ 1
2x= -4
x= 4
3(x-5)=x+3
3x-15=x +3
3x - x+15 +3
3x -1=15+3
2x=18
x=9
7(x+6)=4(5x+4)
7x+42=20x+16
7x-20x=-42+16
- 13x= - 26
x=2
1,5(x +8)= - 4x+1
1,5x +12= - 4x=1
1,5 x +4 x= - 12+1
5,5 x= - 11
x= - 11 : 5.5
x= - 2
1/6(x+9)= - 1/3 x
1/6x + 1 1/2= - 1/3 x
1/6x+1/3x= - 1 1/2
1/3x= - 1 1/2
x= 4 1/2
3/4(x +8)=2x+1
3/4 + 6=2x +1
3/4* 8/1= 6
3/4x-2x= - 6 +1
3/4 - 2/1= 1 1/4
x= 1 1/4:5
x= 1/4