SOLUTION: Are there any values of the variable a for which the expressions 2+a and 2a have the same value? Explain.

Algebra.Com
Question 92739: Are there any values of the variable a for which the expressions 2+a and 2a have the same value? Explain.
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Set the expressions equal to each other

Subtract "a" from both sides


Combine like terms

So the number is



Check:

plug in into

plug in into

Since they both equal 4, the solution works

RELATED QUESTIONS

The expression 2(a+b)=−8.1 for certain values of a and b. Find the value of the... (answered by algebrahouse.com)
How many variable expressions contain the variable w and have a value of 0 when... (answered by solver91311)
Which one of the following expressions has an even integer value for all integers a and... (answered by Alan3354)
Find a value of the variable that shows that the two expressions are not equivalent. (a + (answered by KMST)
Variable in the Radicand? I've been staring at this for just about an hour now, and... (answered by solver91311)
what is the best way to describe a solution to be be defined as? 1. a mathematical... (answered by stanbon)
can a equation be defined as? 1. a mathematical statement that two expressions are equal (answered by stanbon)
Please help me.The question is:- The expressions {{{ x^3-ax+a^2 }}} and {{{ ax^3+x^2-17... (answered by jim_thompson5910)