Answers

✨ Best Answer ✨

間違ってないと思いますよ!
c-b=-(b-c),a-c=-(c-a)を代入するときれいになるはずです

Y.Z

代入したら納得行きました!
ありがとうございます😭

Post A Comment
Were you able to resolve your confusion?

Users viewing this question
are also looking at these questions 😉