Question

Solve: |m| = 8
Solve: |2t + 5| = 3
Solve: |x + 3| = 3
Solve: |3r - 12| = 0

Answer 1

m=-8 or m=8
m=-4 or m=-1
x=-6 or x=0
r=4
, Isn't it?

Answer 2

\[\Large \begin{array}{l}
\left| m \right| = 8\\
m = \pm 8\\\\
\left| {2t + 5} \right| = 3\\
2t + 5 = \pm 3\\
2t = ( - 3 - 5),(3 - 5) = - 8, - 2\\
t = - 4, - 1\\\\
\left| {x + 3} \right| = 3\\
x + 3 = \pm 3\\
x = ( - 3 - 3),(3 - 3) = - 6,0\\\\
\left| {3r - 12} \right| = 0\\
3r - 12 = 0\\
3r = 12\\
r = 4
\end{array}\]

Answer 3

m=8,-8

2t+5=3 ,2t+5=-3
2t=-2 , 2t=-8
t=-1 , t=-4

x+3=3 ,x+3=-3
x=0 ,x=-6


3r-12=0
3r=12
r=4