Question

Which of the following expressions is equivalent to 3?

7 + (-4)
-7 + 4
7 - (-4)
-7 - (-4)

Answer 1

OPTION 1

•

Step 1 ) Solve.

7 + ( -4 )

3

The solution to option 1 is 3.

•

OPTION 2

•

Step 1 ) Solve.

-7 + 4

-3

The solution to option 2 is -3.

•

OPTION 3

•

Step 1 ) Solve.

7 - ( -4 )

11

The solution to option 3 is 11.

•

OPTION 4

•

Step 1 ) Solve.

-7 - ( -4 )

-3

The solution to option 4 is -3.

•

According to the solutions to all the options, the correct answer to the question is...

A ) 7 + ( -4 )

•

•

- Marlon Nunez

Answer 2

Note that:

1) when you are adding a positive and negative, subtract and take the sign of the bigger

2) when you are subtracting a negative, change the sign to addition.

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7 + (-4) = 7 - 4 = 3

-7 + 4 = 4 - 7 = -3

7 - (-4) = 7 + 4 = 11

-7 - (-4) = -7 + 4 = -3

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7 + (-4) is your only answer

hope this helps