问题
解答题
解下列方程: (1)4x=3x-4; (2)-
(3)5x-2(x-1)=14; (4)
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答案
(1)4x=3x-4,
4x-3x=-4,
x=-4;
(2)-
x=3 2
,1 3
-9x=2,
x=-
;2 9
(3)5x-2(x-1)=14,
5x-2x+2=14,
3x=12,
x=4;
(4)
-1-2x 3
=1,x+1 6
2-4x-x-1=6,
-5x=5,
x=-1.