-90 is the final answer.
negative seven
-1
Thirteen plus thirteen.
Thirteen tenths
A negative plus a negative is a negative because a negative plus a negative is the same thing as a negative minus a positive number.
176
negative twenty-seven
negative seven
negative ten
thirteen.
Negative Thirteen. (14+-27=-13)
Note that adding a negative number is equivalent to subtracting a positive number, so 13 + -8 is the same as 13 - 8 which equals 5.
3 and a half plus2 minuse 1 plus 89
20
As we divide a positive by negative sign then the result also has negative sign. When we add we get 3x + 10. Then dividing by - 5, then it becomes - 3x/5 - 2.
-1
The book "Thirteen Plus One" came out in 2010.