Easy Algebra Step-by-Step

24 Easy Algebra Step-by-Step

d. −−^35 ()−^60

Step 1. Keep − 35 and add the opposite of − 60.

−− 35 ()−

=− 35 + 60

Step 2. The signs are opposites (one positive and one negative), so use Rule

2 for addition.

= 25

Step 3. Review the main results.

−− 35 ()− =− 35 += 60 25

e. 0 () 60

Step 1. Keep 0 and add the opposite of −60.

0 () 60

= 06 + 0

Step 2. 0 is added to a number, so the sum is the number (Rule 3 for

addition).

= 60

Step 3. Review the main results.

0 () 60 00 + 60 = 60

f. −− 60 0

Step 1. Keep − 60 and add the opposite of 0.

−− 60 0

=− 60 + 0

Step 2. 0 is added to a number, so the sum is the number (Rule 3 for

addition).

=− 60

Step 3. Review the main results.

−− 60 06 =− 00 + =− 60

Notice that subtraction is not

commutative. That is, in general, for

real numbers a and b, ab−≠b ba.