If a > 0, the solution for x = a is either x = a or x = a.
If a = 0, the solution for x = a is x = a, which is x = 0.
Solve for t.
t – 6 = 5
t = 1
Add
6
to
both
sides
Since t can be either positive or negative, split the equation into two cases.
positive 
or 
negative 
t = 1 

t=1 
The positive case is already solved.
t = 1
Solve the negative case.
t = 1
t = 1
Multiply
both
sides
by
1
The
solution
is
t = 1
or
t = 1