\(5-x=17-\left(-5\right)\)
\(5-x=22\)
\(x=5-22\)
\(x=-17\)
a/ 5 - x = 17 - (-5)
5-x = 22
x= -17
b/ 9-25 = (-7 - x ) - ( 25 - 7)
ko biết làm
c cx v luôn
c) \(17-\text{ }\left\{-x-\text{ }\left[-x-\left(-x\right)\right]\right\}=-16\)
\(17+x+x+x=-16\)
\(17+\left(x+x+x\right)=-16\)
\(17+3x=-16\)
\(3x=-16-17\)
\(3x=-33\)
\(x=-33\div3\)
\(x=-11\)
gfmrjym,rjgn,ilolp9878733
