(-10) + (-7) + (-14) = -31
Totally there is 365 days per year. But Months have 30 and 31 days in them. so for example if 73 days worked then its is 31 plus 28 plus 14 days. we have to write 31 Jan. plus 28 Feb. plus 31 Mar plus etc. and see which span of addition your number comes. In example 73 equals 31 plus 28 plus 14 so it is 2 months and 14 days worked per year.
209 Having a calculator helps.
The answer is 28+31 = 59
31 + 14 = 45
10 + 3(x + 2) = 31
32+14+20+18+16+31+21+16=168
At 41. In other words... 10 plus 31 equals 41 !
The statement 10 plus 21 equals 31 in total. It can also be written as 10 + 21 = 31.
20 + 10 - 31 + 30 - 5 = 24
1 + 10 + 20 = 31
21 + 10 = 31