Question

aflati doua nr x si y stiind ca x-y =10si x/y=5/3

Answer 1

din ecuatia x-y=10 scoatem x=10+y
apoi inlocuim in formula:

x/y=5/3:
10+y /y=5/3
(10+y)x3=5y
30+3y=5y
5y-3y=30
2y=30
y=15
la final inlocuim y in formula:
x-y=10
x-15=10
x=10+15
x=25