Solve simple mathematical proportions by writing the ratios as fractions, setting these fractions equal to each other, cross-multiplying and then solving for any variables. A simple ratio to solve is 2:x = 3:9, which mea... More »

In order to solve for x, you must isolate x on one side of an equation. To separate x from a fractional coefficient, you must cancel that fraction, usually by multiplying its inverse. You should not need a calculator, as... More »

In order to solve a linear equation, the variable must be isolated. While there are many ways for this to be accomplished, one thing remains the same in order to correctly solve it - maintain the balance. To maintain the... More »

In certain applications of mathematics, particularly in business math and economics, the law of variable proportions states that the marginal product of a factor, when increased by itself, will eventually start to declin... More »

Algebra is a method of solving mathematical equations in a way that allows a person to derive unknown quantities, such as bank interest, percentages or proportions. The use of letter variables in algebra to represent unk... More »

Suggested math games for third graders include games that involve basic algebraic operations, numbers and their place values, fractions, measurement and data and geometric shapes. These recreational activities are endors... More »

To solve complex fractions, begin by resolving the numerator (top term) and denominator (bottom term) into one fraction each, flip the bottom fraction and multiply across. Simplify where possible to arrive at the final a... More »