Answer: x= 5 and y= -2 or (5,-2)
Step-by-step explanation:
We have been given that Mark had $436.
Further, we are given that Chris has $86 lesser than what mark had.
Let us assume that Chris has $x. Therefore, we can set up an equation:
(Amount Chris had) + $86 = (Amount Mark had)

Upon subtracting 86 from both the sides, we get:

Therefore, the required expression that represent the amount of money that Chris had is
.
Answer:
B. -3/4.
Step-by-step explanation:
|15 - 12| | - 21 + 9 |
----------- - | -----------|
4 | 8 |
= 3/ 4 - | - 12 / 8 |
= 3/4 - 12/8
= 3/4 - 3/2
= -3/4.