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2x-5=4x+17
2x-4x=17+5
-2x=22 /:(-2)
x=-11
2)
4x-5-7x=2-5x-23
-3x+5x=-21+5
2x=-16 /:2
x=-8
3)
3x-15=5x-33
3x-5x=-33+15
-2x=-18 /:(-2)
x=9
4)
3x+34=-2x-11
3x+2x=-11-34
5x=-45 /:5
x=-9
5)
3x-5=4+2x
3x-2x=4+5
x=9
6)
-5x-17=9x+3
-5x-9x=3+17
-14x=20 /:(-14)
x=-20/14
x=-1i6/14
x=-1i3/7
7)
2x-4+5x=x+2
7x-x=2+4
6x=6 /:6
x=1