4个计算提!!
1> 3/2[2(x-1/2)+2/3]=5x 2> 2- 3x-7/4 = -x+17/5 3> 2.4 - x-4/2 = 3/5x 4> 4/3 (1/4-1) -2 -x = 2
1> (3/2)[2(x-1/2)+2/3] = 5x --->3(2x-1)+2 = 10x --->6x-1 = 10x --->x = -1/4 2> 2-(3x-7)/4 = (-x+17)/5 --->40 - 5(3x-7) = 4(-x+17) --->40 - 15x+35 = -4x+68 --->11x = 7 --->x = 7/11 3> 2.4 - (x-4)/2 = (3/5)x --->24 - 5(x-4) = 6x --->24 -5x+20 = 60 --->5x = -16 --->x = -16/5 4> 4/3 (1/4-1) -2 -x = 2 ......? --->(4/3)(-3/4) -x = 4 --->-1 -x = 4 --->x = -5
1> 3/2[2(x-1/2)+2/3]=5x 3(x-1/2)+1=5x 3x-3/2+1=5x 2x=-1/2 x=-1/4 2> 2-( 3x-7)/4 = (-x+17)/5 两边同乘20 40-5 (3x-7)=4(-x+17) 40-15x+35=-4x+68 11x=7 x=7/11 3> 2.4 - x-4/2 = 3/5x 两边同乘10 24-5(x-4)=6x 24-5x+20=6x 11x=44 x=4 4> 4/3 (1/4-1) -2 -x = 2 -1-2-x=2 x=-5
答：详情>>
