Question

determinati fractia a/b,stiind ca e echivalenta cu fractia 2/3 si a+b=10

Answer 1

a/b = 2/3
a = 2b/3
a + b = 10
2b/3 + b = 10
2b + 3b = 30
5b = 30
b = 30 : 5
b = 6
a = 10 - 6
a = 4

Answer 2

a/b=2/3
3a=2b
a+b=10
a=10-b
3(10-b)=2b
30-3b=2b
30=5b
b=6
a=10-6=4