Answer: xy
Step-by-step explanation:
Combine like terms to get 9xy-8xy
Then subtract the coefficient to get 1xy
Your finally answer is xy because you don’t need to include the coefficient of 1
Number of cards in a deck = 52
Number of back sevens = 2
Number of red three = 2
P(Black seven or red three) 4/52 = 1/13
Answer: 1/13
2y=-x+9
6y=3(-x+9)
3x-3(-x+9)=-15
3x-(-3x+27)=-15
3x+3x-27=-15
6x=-15+27
6x=12
x=2
2y=-2+9
2y=7
y=7/2
Answer is (2 ; 7/2)