Answer:
-4 / 9
Step-by-step explanation:
n - 2 = 10n + 4/2
n - 10n = 4/2 + 2
-9n = 4/2 + 4/2 ( taking LCM of 4/2 and 2)
-9n = 8/2
-9n = 4
n = 4 / -9
therefore n = -4 /9 ( since the minus sign doesn't make a difference whether placed at numerator or denominator) .
You can use simultaneous linear equations in two variables to solve this word problem.
Let Juwan's age be
and Christy's age be
Let us sum their ages and equate it to 92
Ten years ago, Juwan's age was
and Christy's age was
By then Juwan's age was 3 times Christy's age
Expand and simplify,
Put equation (2) in equation (1)
Juwan is 64 now
(0,2),(2,-1)
slope = (-1 - 2) / (2 - 0) = -3/2 <==
Answer: The answer to this question is 10 :D
Step-by-step explanation: