Question

Three sevenths of the possible outcomes were favorable, while the rest of the possible outcomes were unfavorable. (a) what fraction of the possible outcomes were unfavorable? (b) what was the ratio of favorable to unfavorable outcomes?
Gaby
I think u r supposed to subtract 7/7 -3/7 for the first question ratio means to add so maybe 7/7+3/7 I think idk.......