Answer:
Step-by-step explanation:
hello :
-2x+5y=39
....(*)
2x-3y=-25....(**)
add(*) and (**) : 2y =64 so : y =64/2 = 32
put this value in (*) : -2x+5(32) = 39 ....continu
C(3)=Ishann's age
Ishann is 14 years older than Christopher
7*3=21-7=14
So Christopher is 7 years old
The answer is 60 you just need to use factions
