Question

PLZ HELP TROLL ANSWERS GET REPORTED MAKE IT UNDERSTANDABLE Match each expression to its value.

Answer 1

1. 7-5 => 2
2. -7+5 => -2
3. -7-5 => -12
4. 7-(-5) => 12

Explanation:

Lets solve the expressions one by one

1. 7-5

we can see that it is simple subtraction. A smaller number is being subtracted from a large number.

So the answer is 2

2. -7+5

There are two numbers with different signs. When there is a number with plus and a number with minus both quantities are subtracted but the larger quantity determines the sign of the answer.

In this case, 7 is larger and has negative sign, the answer will be -2

3. -7-5

When there are two numbers with minus sign they are added but the answer has the minus sign with it.

So the answer will be: -12

4. 7-(-5)

When minus is multiplied with minus it converts to positive

So

`= 7-(-5) = 7+5 = 12`

Hence,

1. 7-5 => 2
2. -7+5 => -2
3. -7-5 => -12
4. 7-(-5) => 12