You are here:

Algebra/please help me on this equation

Advertisement

Expert: - 10/25/2011


Question
solve 2x-y=y for x

Answer
To solve an equation for x, make sure all of the terms with x in them are on one side.
The only term seen here is the 2x, and it's on the left side, so that's OK.

The next thing to do is put all of the other terms on the opposite side as the x terms.
Since there is a 2x on the left, we don't want the -y there, so add y to both sides.
This gives 2x-y+y = y+y, and that is 2x = 2y.

Lastly, divide by the constant in front of the x; here, it is 2.
Dividing both sides by 2 gives 2x/2 = 2y/2, and since 2/2 = 1, this is the same as x = y.

Algebra

All Answers

Answers by Expert:

Ask Experts

Volunteer

Scott A Wilson

Expertise

Any algebraic question you've got, like linear, quadratic, exponential, etc.

Experience

solving story problems solving linear, parabolic, and 3rd order equations solving equations with multiple variables

Publications
documents at Boeing

Education/Credentials
MS at math OSU in mathematics at OSU BS at OSU in mathematical sciences (math, statistics, computer science)

Awards and Honors
both BS and MS degrees were given with honors

Past/Present Clients
students from all over since the 80's; over 1,000 in algebra

©2012 About.com, a part of The New York Times Company. All rights reserved.