Answer:
x = 5 y =-2
Step-by-step explanation:
You can substitute the 4y in,
7x - (-3-x) = 43
7x + 3 + x = 43
8x + 3 = 43
8x = 40
x = 5
Then plug the x back into the equation,
4y = -3 - 5
4y = -8
y = -2
−129=−48−n
Simplify:
−129=−48+−n
Flip the equation.
−n−48=−129
Add 48 to both sides.
−n−48+48=−129+48
−n=−81
Divide both sides by -1.
−n/−1 = −81/−1
n=81
For 
between 
and 
, we have
is continuous over its domain, so the intermediate value theorem tells us that
is true for 
.
For all , we take into account that is 
-periodic, so the above inequality can be expanded to
where 
is any integer. Equivalently,
To get the corresponding solution set for
simply replace with 
:
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for
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