A book has a total of 237 pages. I have read 142 from the first page. How many pages are left?

A book has 237 pages. From the first page, I have read 142, and there are 95 pages left.

237- 142=95 (page).

So there are about 95 pages to read.

Subtraction formula

1, minuend-subtrahend = difference

2. Difference+Minus = Minus

3, the minuend-difference = reduction

Subtraction correlation characteristic

1, inverse exchange rate: subtraction is inverse exchange. If a and b are any two numbers, then (a-b)=-(b-a).

2. Anti-association method: subtraction is anti-association. When trying to redefine subtraction, then a-b-c=a-(b+c).