Helppppppppppppp me!!!!!!!!!!

Bài 1:

`a)-4/3+(-2/5)+(-3/2)`$\\$`=-26/15+(-3/2)`$\\$`=-97/30`

`b)4/3-(-2/7)-7/10`$\\$`=34/21-7/10`$\\$`=193/210`

`c)2/3-[(-7/4)-(1/2+3/8)]`$\\$`=2/3-[(-7/4)-7/8]`$\\$`=2/3-(-21/8)`$\\$`=79/24`

Bài 2:

`a)x-1/4=-2/5`$\\$`<=>x=(-2/5)+1/4`$\\$`<=>x=-3/20`

`b)4/7-x=1/3`$\\$`<=>x=4/7-1/3`$\\$`<=>x=5/21`

`c)-x-2/3=-6/7`$\\$`<=>-x=(-6/7)+2/3`$\\$`<=>-x=-4/21`$\\$`<=>x=4/21`

`d)11/12-(2/5+x)=2/3`$\\$`<=>2/5+x=11/12-2/3`$\\$`<=>2/5+x=1/4`$\\$`<=>x=1/4-2/5`$\\$`<=>x=-3/20`