Xiao Ming asked his parents that they borrowed 500 and bought a pair of 970 shoes, and gave them 10 yuan for the remaining 30. So 490 + 490 + 10 = 990, where is the other 10

Xiao Ming asked his parents that they borrowed 500 and bought a pair of 970 shoes, and gave them 10 yuan for the remaining 30. So 490 + 490 + 10 = 990, where is the other 10

You can't do that. You should give back 10 yuan to your parents. That's equivalent to taking 490 yuan from your parents, 980 yuan in total, and 970 yuan for shoes. So you have 10 yuan in your hand, 980 = 970 + 10. That's right