解方程.(1)2x-8.125=18.125 (2)3x+ 13 9 = 14 9 (3)x+ 5 9 =1 (4)2x- 5 6 = 5 6 (5)x-( 3 14 + 4 7 )= 1 2 (6)x-( 7 4 - 3 8 )= 7 8 .
(1)2x-8.125=18.125, 2x-8.125+8.125=18.125+8.125, 2x÷2=26.25÷2, x=13.125; (2)3x+
3x+
3x÷3=
x=
(3)x+
x+
x=
(4)2x -
2x -
2x ÷2=
x=
(5)x- (
x-
x-
x= 1
(6)x- (
x-
x -
x= 2
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