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
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
自己动动手把,解个方程还不动手,就把X移到一边,数字移到一边,最后做除法,就行能做出答案
0.75x-1/2x=-5
0.75x-0.5x=-5
0.25x=-5
x=-5/0.25
x=-20
3x+5=4x+1
5-1=4x-3x
4=x
3X+5=4X+18
5-18=4x-3x
-13=x
1-7x=x-7
1+7=x+7x
8=8x
x=1
9x+8-7x=3x
2x+8=3x
x=8
字数限制,不能答了
0.75x-1/2x=-5
0.2x=-5
x=-25
3x+5=4x+1
4x-3x=5-1
x=4
3X+5=4X+18
4x-3x=5-18
x=-13
1-7x=x-7
7x+x=1+7
8x=8
x=1
9x+8-7x=3x
3x+7x-9x=8
x=8
-(x-2)=3(1-x)
-x+2=3-3x
3x-x=3-2
2x=1
x=0.5
0.75x-1/2x=-5
3/4x-2/4=-5
x=-20
3x+5=4x+1
4x-3x=5-1
x=4
3X+5=4X+18;
4x-3x=5-18
x=-13
1-7x=x-7
x+7x=1+7
x=1
9x+8-7x=3x
9x-3x-7x=-8
x=8
-(x-2)=3(1-x)
x=1/2
3x-7(x-1)=3-2(x+3)
x=11/2
(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
0.75x-1/2x=-5,0.25x=-5, x=-20;3x+5=4x+1,x=4; 3X+5=4X+18,x=13;1-7x=x-7 8x=8 x=1;9x+8-7x=3x10 x-9x=8
0.75x-1/2x=-5;
0.75x-0.5x=-5
0.25X=-5
X=-20
3x+5=4x+1
5-1=4X-3X
X=4
3X+5=4X+18;
5-18=4X-3X
X=-13
1-7x=x-7;
1+7=7X+X
8=8X
X=1
9x+8-7x=3x;
9X-7X-3X=-8
-X=-8
X=1