2(2x-1)-2(4x+3)=7两边除以22x-1-4x-3=7/2-2x-4=7/22x=-15/2x=-15/4
2(2x-1)-2(4x+3)=7 4x-2-8x+6=7 4x-8x=7+2-6 -4x=3 x=-0.75
2(2x-1)-2(4x+3)=74x-2-8x-6=7-4x-8=74x=-15x=-15/4
x=-3.25