a) \(\left|x-2\right|-27=-5\)
\(\left|x-2\right|=27-5\)
\(\left|x-2\right|=22\)
\(x=22+2\)
\(x=24\)
b) \(47-5\left(10-x\right)=12\)
\(47-50-5x=12\)
\(-3-5x=12\)
\(5x=-3-12\)
\(5x=-15\)
\(x=-3\)
c) \(\left|x-5\right|+\left(-10\right)^0=\left|-9\right|\)
\(\left|x-5\right|+1=9\)
\(\left|x-5\right|=9-1\)
\(\left|x-5\right|=8\)
\(x=8+5\)
\(x=13\)
d) \(3\left(x+1\right)-12=3\)
\(3x+3-12=3\)
\(3x=3+12-3\)
\(3x=12\)
\(x=4\)
a)
|x-27|=22
=>x-27=22;-22
*)x-27 = 22
=>x=49
*)x-27=-22
=>x=5
b,5(10-x)=35
10-x=7
x=3
a) Ix - 2I -27= -5
<=> Ix-2I= -5 + 27
<=> Ix-2I= 22
<=> x-2 =22 hoặc x-2= -22
<=> x= 24 hoặc x= -20
