See also the Dr. Math FAQ: order of operations 3D and higher
Browse Middle School Algebra Stars indicate particularly
interesting answers or good places to begin browsing. Selected
answers to common questions: Direct and indirect variation.
Inequalities and negative numbers. Positive/negative integer
rules. Solving simple linear equations. - Simplifying
Expressions [01/27/1997] How do you simplify 3x - 2y - x -3y? -
Simplifying Expressions [11/24/1997] Solve: 2x - ( 3 - x ) = x -
7 . - Simplifying Mixed Algebraic Expressions [05/08/1998]
Simplifying fractions such as 2x - (x+y)/y and 4 - 3/(y-1) -
1/(y+1). - Simplifying Polynomials [4/26/1996] How do you
simplify polynomials? - Simplifying Using the Distributive
Property [09/07/99] How do you simplify an expression like
12(c+3d+4e) + 2(2c+d+6e)? - Simplifying with Cube Roots
[01/22/1997] Simplify: cube root(3) / [cube root(6) + cube
root(3)] - Simultaneous Equations [8/25/1996] Ten percent of the
reds were added to twenty percent of the blues, and the total w