0.75x-1/2x=-5;3x+5=4x+1;3X+5=4X+18;1-7x=x-7;9x+8-7x=3x;-(x-2)=3(1-x);3x-7(x-1)=3-2(x+3)解方程详...
问题描述：
0.75x-1/2x=-5;3x+5=4x+1;3X+5=4X+18;1-7x=x-7;9x+8-7x=3x;-(x-2)=3(1-x);3x-7(x-1)=3-2(x+3)解方程详...
0.75x-1/2x=-5;3x+5=4x+1;3X+5=4X+18;1-7x=x-7;9x+8-7x=3x;-(x-2)=3(1-x);3x-7(x-1)=3-2(x+3)解方程详细一点
答
(1) 0.25x=-5 x=-20
(2) 3x-4x=1-5 x=4
(3) 3x-4x=18-5 x=-13
(4) 1+7=x+7x x=1
(5) 9x-7x-3x=-8 x=8
(6) -x+3x=3-2 x=1/2
(7) 3x-7x+2x=3-6-7 x=5/4