Umm well ill show you how I do it so if it is 67 minus 72 I would subtract the tens spot first then I would do the ones it works for me and it is easy so I hope this helped ohand the answer is -5
Answer:
i think you would just do 64+64+64=
Step-by-step explanation:
80% bc 20/25 equals 4/5 and 4/5 equals x/100 and when you do that math it equals 80%