Question

giải chi tiết giúp mình nha

Answer 1

`a)x-7=-(-8)-7`

`x-7=8-7`

`x-7=1`

`x=1+7=8`

________________________________

`d)100-x=-90+80`

  `100-x=-10`

   `x=100-(-10)`

   `x=100+10=110`

________________________________

`c)x+200=-150+6`

   `x+200=-144`

   `x=-144-200`

   `x=-344`

Answer 2

a: =>x-7=8-7

=>x=8

b; =>100-x=-10

=>x=100

c: =>x+200=-144

=>x=-344

Answer 3

\(a,x-7=-\left(-8\right)-7\)
\(x-7=8-7\)
\(x-7=1\)
\(x=8\)
Vậy \(x=8\)
_________________________
\(b,100-x=-90+80\)
\(100-x=-10\)
\(x=100-\left(-10\right)\)
\(x=110\)
Vậy \(x=110\)
_________________________
\(c,x+200=-150+6\)
\(x+200=-144\)
\(x=-144-200\)
\(x=-344\)
Vậy \(x=-344\)