# Basic algebra problems solve for x

Try before you commit. Instead of using a box, we use a letter to represent aBasics of AlgebraAlgebra is a division of mathematics designed to help solve certain types of problemsquicker and easier. Algebra is based on the concept of unknown values calledvariables, unlike arithmetic which is based entirely on known number values.This lesson introduces an important algebraic concept known as the Equation.The idea is that an equation represents a scale such asthe one shown on the right. Instead of keeping the scale balanced with weights, numbers,or constants are used.

These numbers are called constants because they constantly have the same value.For example the number 47 always represents 47 units or 47 multiplied by an unknown number.It never represents another value.The equation may also be balanced by a device called a variable. Visa and MasterCard security codes are located on the back of card and are typically a separate group of 3 digits to the right of the signature strip.American Express security codes are 4 digits located on the front of the card and usually towards the right. What can I do. The most likely cause is that something on your server is hogging resources.