YOU SAID:

A penny earned is a penny spent

INTO JAPANESE

稼いだペニーは過ごしたペニーです

BACK INTO ENGLISH

Penny I earned was a penny I spent

INTO JAPANESE

私が稼いだペニーは私が過ごしたペニーでした

BACK INTO ENGLISH

The penny I earned was the penny I spent

INTO JAPANESE

私が稼いだペニーは私が過ごしたペニーでした

BACK INTO ENGLISH

The penny I earned was the penny I spent