a, x -(-2) =6
suy ra x + 2 =6
Suy ra x=4
b, -x + 23 = 14 -47
suy ra -x + 23 = -33
Suy ra -x = -56
suy ra x= 56
k nha ooooook
a) x-(-2)=6
x +2=6
x=6-2
x=3
b) -x+23=14-47
-x+23=-33
-x=-33-23
-x=-56
\(\Rightarrow\)x=56
a, x - (-2) = 6
=> x + 2 = 6
=> x = 6 - 2 = 4
b, -x + 23 = 14 - 47
=> -x + 23 = - 33
=> -x = -33 - 23 = - 56
=> x = 56
\(a,\)\(x-\left(-2\right)=6\)
\(\Rightarrow x+2=6\)
\(\Rightarrow x=4\)
\(b,\)\(-x+23=14-47\)
\(\Rightarrow-x+23=-33\)
\(x=56\)
