Question

Solve the following: \[80 - \left( { - 50} \right)\]

Answer 1

Hint: This is just an addition. We will just simplify the signs and then perform the addition. Since multiplication of two negative numbers is a plus sign. Thus we will first simplify it and then will add.

Complete step-by-step answer:
Given is, \[80 - \left( { - 50} \right)\]
Now we know that after the first sign there is no number present and that is nothing but 1 is there.
Also when two minus signs are multiplied it results into a plus sign,
So we can write,
\[ = 80 + 50\]
On adding we get,
\[ = 130\]
This is the correct answer.
\[80 - \left( { - 50} \right) = 130\]
So, the correct answer is “130”.

Note: Here note that only the relation between the signs when are used in either multiplication or addition and subtraction.

signs	Add/subtract	Multiply/divide
+,+	+	+
+,-	Sign and operation of the greater number	-
-,-	- (numbers should be added but sign is -)	+