A math club has a secret way of keeping accounts. When the income is 500 yuan, it is recorded as - 440. When the income is 200 yuan, it is recorded as + 260. Guess it, when they are in charge When they earn 50 yuan, how much is it? When they earn 80 yuan, how much is it? Tell me your reason

A math club has a secret way of keeping accounts. When the income is 500 yuan, it is recorded as - 440. When the income is 200 yuan, it is recorded as + 260. Guess it, when they are in charge When they earn 50 yuan, how much is it? When they earn 80 yuan, how much is it? Tell me your reason

ten
-20
Let the given number be x (the income x is a positive number and the loss x is a negative number)
The bookkeeping amount is - x + 60
-500+60=-440
-(-200)+60=260
-50+60=10
-80+60=-20
I hope I can help you