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4x+1=2+8x
4X-8x=2-1
-4X=1 /:(-4)
X=_1/4
3x+1/7=x-1 /*7
21x+1=7x-7
21x-7x=-1-7
14x=-8 /:14
X=4/7
1i3/4-3x=3i1/4-4x /*4
7-12x=13-16x
-12x+16x=-7+13
4x=6 /:4
x=1 i 1/2
x-2x=1/2-1/4
-x=0.25//:-1
x=-0.25
3x+1/7=x-1
3x-x=-1-1/7
2x=1/1-1/7
2x=7/7-1/7
2x=6/7 //:2
x=6/7:2/1
x=6/7*1/2
x=6/14
x=3/7
1i3/4-3x=-3i1/4-4x
-3x+4x=-3i1/4-1i3/4
x=-3.25 -1.75
x=-5
x-2x=1/2-1/4
-x=2/4-1/4
-x=1/4 /:-1
x=-1/4
3x+1/7=x-1 /*7
21x+1=7x-7
21x-7x=-7-1
14x=-8/:14
x=-4/7
1 i 3/4-3x=-3 i 1/4-4x
7/4-3x=-13/4-4x /*4
7-12x=-13-16x
-12x+16x=-13-7
4x=-20/:4
x=-5