Answer:
Possible values of fredicos age satisfy
where
denotes fredicos age.
Step-by-step explanation:
Let
denotes fredicos age.
Three times the difference of fredicos age and 4, increased by 7 = 
According to the question,

So, possible values of fredicos age satisfy 
Here,
denotes fredicos age.
Answer:
12
Step-by-step explanation:
(5/3)y-8 = (7/3)y-16
(5/3)y- (7/3)y = 8 -16
(-2/3) y = -8
y = 3*8/2
y=24/2
y=12
Hehe i hope it can help you
Answer:
+
= 0
Step-by-step explanation:
Based on 2x - 9y - 12 = 0
-9y = 12 - 2x
9y = -12 + 2x
y = 
Therefore...
5x - 4y + 7 = 0
5x - 4(
) + 7 = 0
5x +
-
+ 7 = 0
+
= 0
Answer:3+(-6)
Step-by-step explanation: