# Naming the Property of real numbers Illustrated by each of the following.

• Mar 2nd 2011, 05:06 PM
bdubb
Naming the Property of real numbers Illustrated by each of the following.
1. Find the value of
a-3+5a-2 =

2. What is the reciprocal of -1/5?

3. The reciprocal of 2 is ?
(Bow)
• Mar 2nd 2011, 05:19 PM
bdubb
Quote:

Originally Posted by skeeter
...

1. Simplifying
a + -3 + 5a + -2 = 0

Reorder the terms:
-3 + -2 + a + 5a = 0

Combine like terms: -3 + -2 = -5
-5 + a + 5a = 0

Combine like terms: a + 5a = 6a
-5 + 6a = 0

Solving
-5 + 6a = 0

Move all terms containing a to the left, all other terms to the right.

Add '5' to each side of the equation.
-5 + 5 + 6a = 0 + 5

Combine like terms: -5 + 5 = 0
0 + 6a = 0 + 5
6a = 0 + 5

Combine like terms: 0 + 5 = 5
6a = 5

Divide each side by '6'.
a = 0.8333333333

Simplifying
a = 0.8333333333

2. reciprocal of(-1) / 5 = -0.

3. 0.5

I relooked at it. Is this all correct?
• Mar 2nd 2011, 05:36 PM
bdubb
1. I used a program called Algebra Helper :s I didn't add the 0 in the Question I asked on the program. What did It do wrong? How could I solve this right
2. 5?
3. 1/2 or should I put 0.5 it will be the same right?
• Mar 2nd 2011, 05:46 PM
bdubb
Name the property of real numbers Illustrated by each of the following.

1. Find the value of:
a-3+5a-2=

^ Thats what it says exactly on my Exam.
• Mar 2nd 2011, 05:49 PM
skeeter
Quote:

Originally Posted by bdubb
Name the property of real numbers Illustrated by each of the following.

1. Find the value of:
a-3+5a-2=

^ Thats what it says exactly on my Exam.

going to have to cut this thread off ... MHF policy does not allow help to be provided on Exams.
• Mar 2nd 2011, 05:51 PM
bdubb
It's not like the Exam you think it is its just what my Book says.. not like a test :(