Mathematics
Grade-7
Easy
Question
(– 3) + 7 – (– 9) = ___________.
- 11
- 12
- 13
- -13
Hint:
Numbers of opposite signs are subtracted and the answer is assigned with the sign of the largest numerical value.
The correct answer is: 13
We are asked to find the value of the expression (– 3) + 7 – (– 9). Product of two negative numbers are always negative, so we have -(-9)=9.
That is, (– 3) + 7 – (– 9)=-3+7+9
Adding them, we have:
(– 3) + 7 – (– 9)=-3+7+9=-3+16
=13
Hence, the correct answer is option c.
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