5х+1=3х+1; 6*х-1=11; х-1=7(х-1); х-2=1+4х;

Question

5х+1=3х+1; 6*х-1=11; х-1=7(х-1); х-2=1+4х;

Answer 1

1) 5х-3х = 1-1
2х = 0
х=0
2) 6х=12
х=2
3) х-1 = 7х-7
х-7х=-7+1
-6х=-6
х=1
4) х-4х=1+2
-3х=3
х= -1

Answer 2

1) 5x+1=3x+1
5x-3x=+1-1
2x=0
x=0
2)6x-1=11
6x=12
x=2
3)x-1=7(x-1)
x-1=7x-7
7x-x=7-1
6x=6
x=1
4)x-2=1+4x
x-4x=2+1
-3x=3
x=-1