1.两边同乘以1.2,得到4(5x-0.4)-6(1.3x-0.05)=13.85-8x
化解得20x-1.6-7.8x+0.3=13.85-8x,即20.2x=15.15,解得x=0.75
2.2x-1的绝对值为10/3,所以2x-1的值为正负10/3,即2x-1=10/3,2x-1=-10/3,解得x=13/6,x=-7/6
1.两边同乘以1.2,得到4(5x-0.4)-6(1.3x-0.05)=13.85-8x
化解得20x-1.6-7.8x+0.3=13.85-8x,即20.2x=15.15,解得x=0.75
2.2x-1的绝对值为10/3,所以2x-1的值为正负10/3,即2x-1=10/3,2x-1=-10/3,解得x=13/6,x=-7/6