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2x=20 / : 2
x=10
-8x+6=4 /+8x
6=4+8x / -4
2=8x
x=
2x = 6 + 14
2x = 20 / : 2
x = 10
-8x+6=4
-8x = 4 - 6
-8x = -2 / : ( -8 )
x = - 1/4