Answer:
$0.75
Step-by-step explanation:
Greg spends $0.45 on a eraser and $0.30 on a pen. How much money does Greg spend?
Well first you find the key words, (How much) which means you will be using addition in this problem. The numbers you will be adding are $0.75 and $0.30 which equals, $0.75
If you take 4/6, you divide so it will be 0.6667... and then if you take 5/7 you divide again, and then it will be 0.7143...