The most basic equation in algebra is a straight line.
y=ax+b
This equation has two variables and two constants. I have found that if students are not clear on the meaning of these terms, then they will have trouble manipulating equations and recognizing the answer. So first, a primer on constants, variables and other symbols. Primer
At any time, follow this link 
to review the Top Ten Rules™.
Basic Rules of the Road
The equals sign. =
It seems so simple but as it turns out, misperception regarding its use prevents many students from advancing. Go to this page to Learn More
Critical Thinking Skills
Finding the element that controls everything els.
Algebra for Chemistry
The symbolism is different but the similarities are there to be used.
The Algebra School is not a course
Rather it is a reference source for dealing with all the roadblocks and misperceptions that make alegrba seem difficult.
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