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2x-6-8x+20=1+3x
-6x+14=1+3x
-9x=-13 |:(-9)
x=13/9
x=1⁴/₉
2x-6-8x+20=1+3x
-6x+14=1+3x /-1
-6x+13=3x /-3x
-9x+13=0 /-13
-9x=-13 /*-1
9x=13 / :9
x=1,(4)