Mathematics

Question

Simplify. Consider all the cases.
Example:
x−5=

x−5, if x>5
0, if x=5
5−x, if x<5

2x+7
Answer:
a) If x > , then 2x + 7 =_______
b)If x = , then 2x + 7 = ______
c) If x < , then 2x + 7 = _____
(x−4)+7
Answer:
If x > , then (x − 4) + 7 =
If x = , then (x − 4) + 7 =
If x < , then (x − 4) + 7 =

7−(x−7)
Answer:
If x > , then 7 − (x − 7) =
If x = , then 7 − (x − 7) =
If x < , then 7 − (x − 7) =

7−(12−x)
Answer:
If x > , then 7 − (12 − x)=
If x = , then 7 − (12 − x =
If x < , then 7 − (12 − x)=

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