Question 905919
One question at a time please!
Two apples and one orange together cost 72 cent. One apple and two oranges together costs 63 cent. How much does one orange cost? Enter your answer as a whole number, i.e. no € symbol.
2a+1o=72
1a+2o=63
multiply #2  by 2
2a+4o=126
multiply #1 by -1
2a+4o=126
-2a-1o=-72
add
3o=54
o=18
One orange costs 18 cents