help solving a word problem

Question

A rock group plans to travel for a total of 33 weeks, making three concert stops. They will be in Japan for 6 more weeks than they will be in Australia. Their stay in Sweden will be 3 weeks shorter than that in Australia. How many weeks will they be in each country?

 

 

Austrlia

 

 

Japan

 

Sweden

Answer 1

j = a + 6

s = a - 3

j + a + s = 33

a + 6 + a + a - 3 = 33

a = 10