Question

((x-1)/0.3)-2x=(0.1x+0.2)/0.05 1/2（5x+(7/3))=1/3(6x-(5/2))-1/6(x+4) 2(3(4(5x-1)-8)-20)-7=1

Answer 1

((x-1)/0.3)-2x=(0.1x+0.2)/0.05
10(x-1)/3-2x=20(0.1x+0.2)
两边乘3
10x-10-6x=6x+12
4x-10=6x+12
2x=-22
x=-11
1/2（5x+(7/3))=1/3(6x-(5/2))-1/6(x+4)
两边乘6
15x+7=12x-5-x-4
15x+7=11x-9
4x=-16
x=-4
2(3(4(5x-1)-8)-20)-7=1
2(3(4(5x-1)-8)-20)=8
3(4(5x-1)-8)-20=4
3(4(5x-1)-8)=24
4(5x-1)-8=8
4(5x-1)=16
5x-1=4
5x=5
x=1