## Math: what does associative mean?

Tutoring math, you mention definitions. The tutor defines associative. associative(adj): independent of grouping: for instance, (a+b)+c = a+(b+c), meaning that addition is associative. Multiplication is associative as well. Source: Gallian, Joseph A. Contemporary Abstract Algebra. Toronto: D.C. Heath and Company, …

Tagged with: ,

## Algebra: solving when x is on the bottom

The tutor covers a day-to-day issue in high school algebra. Consider the following problem: 14=5/(3x) Solution: First, multiply both sides by 3x: 3x(14)=(3x)*5/(3x) The right side is now both divided and multiplied by 3x, so they cancel there: 3x(14)=5 On …

## Algebra: equations with x on both sides

Tutoring high school math, you might help students whose equation solving skills are rusty.  The tutor shows a technique students must know….   Equation solving can be like fitness. A student can be good at it, but then get out …

Tagged with: , ,

## Math: Algebra: clearing fractions in equations

Tutoring math, you realize the importance of this technique.  The math tutor introduces it as an essential skill for those learning algebra. Most people are fairly comfortable with solving an equation such as 2x -11 = 7x + 19 By …

Tagged with: , ,