-10 - (-2)

Subtracting -2 is the same as adding 2. Once it is written as addition, we just following the rules for addition to complete.

- 4.1 - 5.3

Subtracting 5.3 is the same as adding -5.3. Once it is written as addition, We just following the rules for addition to complete.

If you need to review the order of operations go to Tutorial 4: Operations of Real Numbers.

*Exponent *Multiplication

*16 - 4 = 12

Plugging 2 for x and -2 for y and simplifying we get:

Replacing x with -2 we get:

Since we got a TRUE statement (7 does in fact equal 7), then -2 is a solution to this equation.

Last revised on July 24, 2011 by Kim Seward. All contents copyright (C) 2001 - 2011, WTAMU and Kim Seward. All rights reserved.