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GMAT > Math > Algebra > Equation

GMAT Math Equation Overview

In GMAT, equations are useful for relating variables and numbers. An equation is a statement that two numbers or expressions are equal. An Equation has two equal parts. We can take ax + by + c = 0 as a typical example of equation asked in GMAT CAT. Here a, b and c are the constants while x and y are variables (see GMAT Math Algebra).

Equation Terms used in GMAT CAT

  • Root: When an equation has a variable, the solution to the equation is the number that makes the equation true when we replace the variable with its value. This also called as the root of the equation.
  • Degree: Degree of an equation is the highest power of the variable used.
  • Simple Equation: If an equation has only one parameter with degree 1 then it is called as simple equation.
  • Quadratic Equation: If degree of an equation is two then it is called a Quadratic Equation. It is in the form of ax2 + bx + c = 0.
  • Simultaneous Equation: If an equation of degree 1 has two or more than two variables then we cannot solve it to get unique value as its roots.

GMAT Math Equation Example Question

Q. If 3 apples and 2 oranges cost $4, and 8 apples and 4 oranges costs $10. What is the price of 1 apple and 1 orange?

  1. 0.5
  2. 1
  3. 1.5
  4. 3
  5. Cannot be determined from the given information
Free GMAT Math Percent Samples
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Ans: 1.5 - Option C

GMAT Algebra Topics

Below are the topics covered under GMAT Algebra. Click on them to learn more:

Related Topics

GMAT Math Arithmetic | GMAT Math Algebra | GMAT Math Geometry | GMAT Math Data Sufficiency | GMAT Math Problem Solving

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